EN 50041:2019

Low-voltage switchgear and controlgear - Control switches - Position switches 42,5 x 80 - Dimensions and characteristics

This document applies to certain position switches with automatic return actuator, the standardized dimensions of which and the characteristics necessary for their application are given below. A smaller size (30x55) is standardized in EN 50047. This document includes six types of position switches with the following actuator types: — roller lever actuator (form A); — rounded plunger actuator (form B); — roller plunger actuator (form C); — rod lever actuator (form D); — rounded plunger side actuator (form F); — roller plunger side actuator (form G). This document is covering devices fitted with either independent (snap) action contact elements designated (1), or dependent action (slow make and break) contact elements designated (2) in Clause 5.

Niederspannungs-Schaltgeräte - Hilfsstromschalter - Positionsschalter 42,5 × 80 - Maße und Kennwerte

Appareillage à basse tension - Auxiliaires de commande - Interrupteurs de position 42,5x80 - Dimensions et caractéristiques

Nizkonapetostne stikalne in krmilne naprave - Kontrolna stikala - Položaj stikala 42,5×80 - Mere in značilnosti

Ta publikacija se uporablja za nekatere položaje stikala s samodejnim povratnim aktuatorjem za industrijsko uporabo, podaja pa tudi njegove standardizirane mere in značilnosti, potrebne za njegovo uporabo.

General Information

• Status: Published
• Publication Date: 20-Jun-2019
• Withdrawal Date: 05-Nov-2020
• ICS: 29.130.20 - Low voltage switchgear and controlgear
• Technical Committee: CLC/TC 121A - Low-voltage switchgear and controlgear
• Drafting Committee: CLC/TC 121A - Low-voltage switchgear and controlgear
• Current Stage: 9093 - Decision to confirm - Review Enquiry
• Start Date: 21-Feb-2024
• Completion Date: 23-Sep-2025
• Directive: 2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
• Mandate: M/511 - Mandate to CEN, CENELEC and ETSI relating to harmonised standards in the field of the Low Voltage Directive
• Ref Project: SIST EN 50041:2019 - Low-voltage switchgear and controlgear - Control switches - Position switches 42,5×80 - Dimensions and characteristics

Relations

• Replaces: EN 50041:1981 - Low-voltage switchgear and controlgear for industrial use - Control switches - Position switches 42,5 x 80 - Dimensions and characteristics
• Effective Date: 23-Jan-2023

Overview

EN 50041:2019 is a European standard published by CLC that specifies requirements for low-voltage switchgear and controlgear, focusing specifically on control position switches sized 42.5 x 80 mm. This standard defines the dimensions and characteristics of position switches with automatic return actuators, ensuring consistent design and functionality for industrial and electrical applications across Europe.

Replacing the earlier EN 50041:1981 edition, EN 50041:2019 harmonizes technical specifications for six actuator forms and contact element types, facilitating interoperability and safety in control switchgear systems. It complements the smaller size position switches (30 x 55 mm) covered under EN 50047.

Key Topics

• Scope and Applicability:
  EN 50041:2019 covers position switches with automatic return actuators used in low-voltage controlgear. It standardizes the dimensions and functional characteristics crucial for applications requiring precise mechanical and electrical control interfaces.

• Actuator Types:
  The standard defines six types of actuators for position switches:

  • Roller lever actuator (Form A)
  • Rounded plunger actuator (Form B)
  • Roller plunger actuator (Form C)
  • Rod lever actuator (Form D)
  • Rounded plunger side actuator (Form F)
  • Roller plunger side actuator (Form G)

• Contact Mechanisms:
  Switches can include either:

  • Independent (snap) action contacts, designated as (1)
  • Dependent (slow make and break) action contacts, designated as (2)

• Dimensions and Construction:
  The standard provides detailed dimensional specifications for enclosures and actuators, including operating points, differential travel distances, and cable entry requirements. Enclosures must support cable diameters up to 12 mm with standardized thread sizes (e.g., M20x1.5 per ISO 261).

• Electrical Requirements:
  Electrical characteristics align with EN 60947-5-1, mandating position switches to feature at least one normally open (make) contact and one normally closed (break) contact.

• Markings and Protection:
  Terminal markings and protective conductor terminals comply with EN 60947-1 standards. Devices must achieve a minimum IP65 degree of protection, ensuring resistance against dust and water ingress.

Applications

• Industrial Control Panels:
  EN 50041-compliant position switches are ideal for low-voltage control panels in manufacturing and automation industries, where reliable actuator feedback is critical.

• Machine Safety Systems:
  Position switches meeting this standard help monitor machine access points and moving components, enhancing operational safety.

• Building Automation:
  Used in HVAC and other building control systems to detect door or valve positions with standardized mechanical performance.

• Electrical Switchgear Assemblies:
  Switchgear manufacturers utilize EN 50041 to design control switches that fit seamlessly into standardized panel cut-outs, ensuring ease of installation and maintenance.

Related Standards

• EN 50047: Covers similar position switches but with smaller dimensions (30 x 55 mm).
• EN 60947-1: Sets general rules for low-voltage switchgear and controlgear, including requirements for protective conductor terminals and degree of protection testing.
• EN 60947-5-1: Defines specifications for electromechanical control circuit devices and switching elements, directly referenced for contact unit characteristics in EN 50041.
• ISO 261: Governs metric screw thread standards relevant for cable entry threads in switch enclosures.

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EN 50041:2019 plays a crucial role in standardizing position switches within the low-voltage controlgear segment, promoting compatibility, safety, and reliability in electrical and industrial systems. Adherence to this standard helps manufacturers and engineers ensure consistent performance and regulatory compliance in control switch applications.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2019
Nadomešča:
SIST EN 50041:1998
Nizkonapetostne stikalne in krmilne naprave - Kontrolna stikala - Položaj stikala
42,5×80 - Mere in značilnosti
Low-voltage switchgear and controlgear - Control switches - Position switches 42,5×80 -
Dimensions and characteristics
Niederspannungs-Schaltegeräte - Hilfsstromschalter - Positionsschalter 42,5x80 - Masse
und Kennwerte
Appareillage à basse tension - Auxiliaires de commande - Interrupteurs de position
42,5x80 - Dimensions et caractéristiques
Ta slovenski standard je istoveten z: EN 50041:2019
ICS:
29.130.20 Nizkonapetostne stikalne in Low voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 50041
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 29.130.20 Supersedes EN 50041:1981
English Version
Low-voltage switchgear and controlgear - Control switches -
Position switches 42,5 x 80 - Dimensions and characteristics
Appareillage à basse tension - Auxiliaires de commande - Niederspannungs-Schaltgeräte - Hilfsstromschalter -
Interrupteurs de position 42,5x80 - Dimensions et Positionsschalter 42,5x80 - Maße und Kennwerte
caractéristiques
This European Standard was approved by CENELEC on 2019-05-06. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 50041:2019 E
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Dimensions . 5
4.1 General . 5
4.2 Enclosure . 5
4.3 Actuator . 6
4.3.1 General . 6
4.3.2 Roller lever actuator (form A) . 7
4.3.3 Rounded plunger actuator (form B) . 8
4.3.4 Roller plunger actuator (form C) . 8
4.3.5 Rod lever actuator (form D) . 9
4.3.6 Rounded plunger side actuator (form F) . 9
4.3.7 Roller plunger side actuator (form G) . 10
5 Designation . 10
6 Contact unit . 11
7 Terminal marking . 11
8 Terminal for protective conductor . 11
9 Degree of protection . 11
Bibliography . 12

European foreword
This document (EN 50041:2019) has been prepared by CLC/TC 121A “Low-voltage switchgear and
controlgear”.
The following dates are fixed:
• latest date by which this document has to be (dop) 2020-05-06
implemented at national level by publication of
an identical national standard or by
endorsement
• latest date by which the national standards (dow) 2020-11-06
conflicting with this document have to be
withdrawn
This document supersedes EN 50041:1981.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
1 Scope
This document applies to certain position switches with automatic return actuator, the standardized
dimensions of which and the characteristics necessary for their application are given below.
A smaller size (30x55) is standardized in EN 50047.
This document includes six types of position switches with the following actuator types:
— roller lever actuator (form A);
— rounded plunger actuator (form B);
— roller plunger actuator (form C);
— rod lever actuator (form D);
— rounded plunger side actuator (form F);
— roller plunger side actuator (form G).
T
...