SC 61B - Safety of stationary cooking appliances for household use, and microwave appliances for household and commercial use

IEC 60335-2-110:2024 deals with the safety of microwave appliances intended for commercial use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances.
As far as is practicable, this standard deals with the common hazards presented by these types of appliances.
Appliances covered by this standard incorporate an open-ended applicator for treatment of the load. They are divided into three types:
- with insertion applicator, typically for moisture removal by insertion into holes in floors, walls or ceilings;
- with large area contacting applicator, typically for drying of floors, walls or ceilings;
- with small area contacting applicator, typically for paint removal and spot-heating.
Microwave appliances with insertion applicator, large area contacting applicator or small area contacting applicator are using electromagnetic energy in one or several of the ISM frequency bands between 300 MHz and 30 GHz, for supplying energy to an external load which is heated so that a resulting process of drying, moisture transport which can result in forces due to formation of steam, decomposition or chemical modification, melting, or termination of organisms such as bacteria or fungus occurs.
Appliances with insertion applicator and with large area contacting applicator are portable appliances. Appliances with small area contacting applicator are handheld appliances.
Appliances that use non-electrical energy are within the scope of this standard. The microwave-related portion is considered motor-operated.
The rationales for the microwave barrier and associated leakage tests are described in informative Annex AA.
Attention is drawn to the fact that
- these appliances can radiate microwave energy outside a restricted area where they are used. The additional requirements specified by national authorities responsible for the protection for non-ionising radiation that the limit of power flux density is 10 W/m2, averaged over any time period of 6 min, outside this restricted area is taken into consideration in this standard;
- these appliances are intended to exclusively treat the load in normal operation, i.e. this standard does not apply to appliances or systems employing free space microwave propagation;
- for appliances intended to be used in tropical countries, special requirements can be necessary;
- in many countries, additional requirements are specified by the national health authorities, and national authorities responsible for the protection of labour and for non-ionising radiation protection.
This standard does not apply to
- household microwave ovens, including combination microwave ovens (IEC 60335-2-25);
- commercial microwave ovens with a cavity door, commercial combination microwave ovens with a cavity door and commercial microwave ovens without a cavity door and with transportation means (IEC 60335-2-90);
- industrial microwave heating equipment (IEC 60519-6);
- appliances for medical purposes (IEC 60601-1);
- appliances and equipment for laboratory use (IEC 61010 series);
- appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas);
Some of the specifications and tests in this standard are not applicable for other than 2 450 MHz appliances.
This second edition cancels and replaces the first edition published in 2013 and Amendment 1:2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
- Subclause 7.1 has been improved in clarity.
- Subclauses 19.11.2 and 19.103 have been improved in clarity.
- Clause 28 has been modified to add screw requirements.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments unless that edition precludes it; in that case, the latest edition that

IEC 60335-2-90:2024 deals with:
- the safety of microwave ovens with a cavity door intended for commercial use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances.
These appliances are not intended for household and similar purposes. They are used for commercial processing of food, also in areas open to the public, for example in kitchens of restaurants, canteens, hospitals and in commercial enterprises such as bakeries and butcheries;
- the safety of combination microwave ovens with a cavity door, the requirements of which are contained in normative Annex AA;
- the safety of microwave ovens without a cavity door and with transportation means that are intended for commercial use only, for the heating of food and beverages, the requirements of which are contained in normative Annex BB.
Microwave ovens covered by normative Annex BB have transportation means for moving the load through the microwave oven. Requirements for tunnel microwave ovens and several types of microwave vending machines are covered.
This standard also deals with microwave ovens intended to be used on board ships, for which normative Annex EE is applicable.
In normative Annex BB, a microwave oven without a cavity door and with transportation means is described as a microwave oven. All clauses of this standard apply to these appliances unless otherwise specified in normative Annex BB.
This part of IEC 60335 also takes into account ordinary persons having access to the removing area of the vending machine.
The appliance can be built into a vending machine, in which case IEC 60335-2-75 can also be applicable.
Appliances that use non-electrical energy are within the scope of this standard.
As far as is practicable, this standard deals with the common hazards presented by these types of appliances.
This standard does not take into account the use of a microwave oven without a cavity door and with transportation means by ordinary persons except in the vicinity of entrance and exit ports.
The rationales for particular microwave exposure conditions and measures related to microwave energy being confined by an open structure are given in normative Annex BB.
Attention is drawn to the fact that
- for appliances intended to be used in vehicles or on trains, on board ships or board aircraft, additional requirements can be necessary;
- for appliances intended to be used in tropical countries, special requirements can be necessary;
- in many countries, the national health authorities, the national authorities responsible for the protection of labour and similar authorities specify additional requirements;
- in many countries, national authorities specify additional requirements to BB.22.101.1.
This standard does not apply to
- Microwave ovens including combination microwave ovens for household use covered by IEC 60335-2-25 and used in the following environments by laymen:
• staff kitchen areas in shops, offices and other working environments;
• farm houses;
• by clients in hotels, motels and other residential type environments;
• bed and breakfast type environments.
- industrial microwave heating equipment (IEC 60519-6);
- appliances for medical purposes (IEC 60601);
- appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
This fifth edition cancels and replaces the fourth edition published in 2015 including its Amendment 1:2019. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) the appliance used in area open to the public has been introduced in Clause 1, 3.8.107, 7.12, 8.1.1, 11.8, 20.2, 22.103.2, 22.105 and 22.117;
b) Subclauses 5.5, 7.12.1, 11.2, 11.7, 20.1 and 20.101 have been modified to add for stacking installation;
c) Subclauses 7.1, 1

IEC 60335-2-25:2024 deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V including direct current (DC) supplied appliances and battery-operated appliances. This standard also deals with combination microwave ovens, for which normative Annex AA is applicable. This standard also deals with microwave ovens intended to be used on board ships, for which normative Annex BB is applicable. Appliances not intended for normal household use but which nevertheless can be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliance is intended to be used professionally to process food for commercial purposes, the appliance is not considered to be for household and similar use only.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
- persons (including children) whose physical, sensory or mental capabilities; or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction;
- children playing with the appliance.
Attention is drawn to the fact that
- for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;
- in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.
This standard does not apply to
- commercial microwave ovens (IEC 60335-2-90);
- commercial microwave appliances with insertion or contacting applicators (IEC 60335 2 110);
- industrial microwave heating equipment (IEC 60519-6);
- appliances for medical purposes (IEC 60601);
- appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
This eighth edition cancels and replaces the seventh edition published in 2020. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) some subclauses have been modified for the appliance outlets and socket-outlets;
b) Subclause 7.12 has been improved in clarity;
c) Subclauses 8.1.1 and 20.2 have been modified to adopt test probe 19;
d) Subclauses 10.1 and 10.2 have been improved in clarity for inverter type microwave ovens;
e) maximum temperature rises of external accessible surfaces have been added in Subclause 11.8;
f) test criterion has been modified in Subclause 15.101;
g) Subclause 15.102 has been modified for harmonization with IEC 60335-2-6;
h) Subclauses 8.1.3, 15.103, 19.11.2, 19.13, 22.105, 22.106, 22.111 and Figure 101 have been improved in clarity;
i) Subclauses 22.103.2, 22.105 and 22.120 have been modified to adopt test probe 18;
j) Subclause 16.101 has been modified to move the content of 16.101.1, 16.101.2 directly under 16.101;
k) Subclause 22.119 has been modified to move the content of 22.119.1, 22.119.2 and 22.119.3 directly under 22.119.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments unless that edition precludes it; in that case, the latest edition that does not preclude it is used. It was established on the basis of the sixth edition (2020) of that standard.

IEC 60335-2-25:2019 deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V.
This standard also deals with combination microwave ovens, for which Annex AA is applicable.
This standard also deals with microwave ovens intended to be used on board ships, for which Annex BB is applicable.
Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliance is intended to be used professionally to process food for commercial purposes, the appliance is not considered to be for household and similar use only.
As far as is practicable, this standard deals with the common hazards presented by appliances that are encountered by all persons in and around the home. However, in general, it does not take into account
– persons (including children) whose physical, sensory or mental capabilities or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction;
– children playing with the appliance.
Attention is drawn to the fact that
– for appliances intended to be used in vehicles or on board ships or aircraft, additional requirements can be necessary;
– in many countries, additional requirements are specified by the national health authorities, the national authorities responsible for the protection of labour and similar authorities.
This standard does not apply to
– commercial microwave ovens (IEC 60335-2-90);
– industrial microwave heating equipment (IEC 60519-6);
– appliances for medical purposes (IEC 60601);
– appliances intended to be used in locations where special conditions prevail, such as the presence of a corrosive or explosive atmosphere (dust, vapour or gas).
This seventh edition cancels and replaces the sixth edition published in 2010, Amendment 1:2014 and Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant changes with respect to the sixth edition:
– 11.7 and 19.13 are improved in clarity;
– in 19.102, a note is converted into normative text;
– 19.101 is improved with an alternative measurement method;
– 22.121 is improved with requirements for simultaneous activation of heating elements and motors;
– 15.2, 15.101, 21, 22.102, 22.112, 22.119, 22.120, 24.101 and 27.1 are improved in clarity;
– Annex A has editorial improvements and feasible limits of deviations.
This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of the fifth edition (2010) of that standard.

IEC 60335-2-90:2015 deals with
- the safety of microwave ovens with a cavity door intended for commercial use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances;
- the safety of combination microwave ovens with a cavity door, the requirements for which are contained in Annex AA;
- the safety of microwave ovens without a cavity door and with transportation means that are intended for commercial use only, for the heating of food and beverages, the requirements for which are contained in Annex BB.
Microwave ovens covered by Annex BB have transportation means for moving the load through the microwave oven. Requirements for tunnel microwave ovens and several types of microwave vending machines are covered. This standard also deals with microwave ovens intended to be used on board ships, for which Annex EE is applicable. In general, this standard does not take into account the use of appliances by young children or infirm persons without supervision or children playing with the appliance. This international standard does not take into account the use of a microwave oven without a cavity door and with transportation means by ordinary persons except in the vicinity of entrance and exit ports. This part 2 is to be used in conjunction with the latest edition of IEC 60335-1 and its amendments. It was established on the basis of the fifth edition (2010) of that standard. This fourth edition cancels and replaces the third edition published in 2006 including its Amendment 1 (2010) and Amendment 2 (2014). It constitutes a technical revision. The principal changes with respect to the previous edition are as follows (minor and editorial changes are not listed):
- a statement in 7.12 is required for appliances intended to be used on commercial road vehicles;
- a statement in 7.12 is required concerning cleaning of the appliance with a water jet;
- the replacement of 22.103, 22.104 and 22.105 allows interlock systems with at least one concealed door interlock as well as alternative interlock systems without concealed door interlock;
- requirements are added for appliances for installation in commercial road vehicles;
- an annex is added dealing with routine tests. The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this standard be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of its publication. Key words: Microwave, Microwave Oven, Microwave enclosure

The safety of microwave ovens with a cavity door intended for commercial use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances.It also deals with the safety of microwave ovens without a cavity door and with transportation means that are intended for commercial use only.
This publication is to be read in conjunction with IEC 60335-1:2010.

IEC 60335-2-110:2013 deals with the safety of microwave appliances intended for commercial use, their rated voltage being not more than 250 V for single-phase appliances connected between one phase and neutral and 480 V for other appliances. Appliances covered by this standard incorporate an open-ended applicator (as example an overview is given in Figure 103) for treatment of the load. They are divided into three types:
- with insertion applicator, typically for moisture removal by insertion into holes in floors, walls or ceilings (an example is given in Figure 106);
- with large area contacting applicator, typically for drying of floors, walls or ceilings (examples are given in Figure 104 and Figure 105);
- with small area contacting applicator, typically for paint removal and spot-heating (an example is given in Figure 107). Key words: commercial microwave appliance, insertion applicator, contacting applicator
This publication is to be read in conjunction with IEC 60335-1:2010.

IEC 60335-2-25:2010 deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V. This standard also deals with combination microwave ovens, for which Annex AA is applicable. This standard also deals with microwave ovens intended to be used on board ships, for which Annex BB is applicable. Appliances not intended for normal household use but which nevertheless may be a source of danger to the public, such as appliances intended to be used by laymen in shops, in light industry and on farms, are within the scope of this standard. However, if the appliance is intended to be used professionally to process food for commercial purposes, the appliance is not considered to be for household and similar use only. The principal changes with respect to the previous edition are as follows:
- the scope is modified to, cover microwave ovens on board ships, to better define seperation between "household and similar use" and "commercial use" and indicate it does not to take into account persons whose capabilities or lack of experience and knowledge prevents them from using the appliance safely without supervision or instruction and children playing with the appliance;
- the intended use is defined for clarification;
- the door endurance test is rationalised;
- the replacement of 22.103, 22.104 and 22.105 allows interlock systems with at least one concealed door interlock as well as alternative interlock systems without concealed door interlock;
- the tests on electronic door interlock systems are defined for clarification;
- the pollution degree of combination microwave ovens is defined for clarification;
- the thickness requirement for sheaths of visibly glowing heating elements of combination microwave ovens is defined for clarification. It is the recommendation that the content of this publication be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of publication.

IEC 60335-2-90-A1:2010 Amendment 1 NOTE The attention of National Committees is drawn to the fact that equipment manufacturers and testing organizations may need a transitional period following publication of a new, amended or revised IEC publication in which to make products in accordance with the new requirements and to equip themselves for conducting new or revised tests. It is the recommendation of the committee that the content of this publication be adopted for implementation nationally not earlier than 12 months or later than 36 months from the date of publication.

Deals with the safety of microwave ovens for household use. The rated voltage is less than 250 V. It also deals with combination microwave ovens. For commercial microvave ovens, see IEC 60335-2-90.

Deals with the safety of commercial microwave ovens. These ovens incorporate a door for user access to the cavity. The rated voltage is less than 250 V. for single phase appliances and 480 V. for other appliances. The oven may be built into a vending machine (see also IEC 60335-2-75). The oven may also incorporate conventional heating means (see also IEC 60335-2-36 and IEC 60335-2-42). For household microwave ovens, see IEC 60335-2-25. For industrial microwave heating equipment, see IEC 60519-6. For appliances for medical purposes, see IEC 60601.

Household and similar electrical appliances - Safety - Part 2-90: Particular requirements for commercial microwave ovens.

Applies to the safety of appliances for heating food and beverages using electromagnetic energy (microwaves) in one or more of the I.S.M. frequency bands between 300 MHz and 30 GHz and intended for household use. These appliances may also incorporate a browning or steaming function.

Deals with the safety of microwave ovens for commercial use, which incorporate a door for user access to the cavity.