EN 2995-006:2023

• Abstract:

  This document specifies the characteristics of single-pole circuit breakers, temperature compensated with a rated current from 1 A to 25 A, used in aircraft on-board circuits at a temperature between -55 °C and 125 °C and at an altitude of 15 000 m max.; These circuit breakers are operated by a push-pull type single push button (actuator), with delayed action "trip-free" tripping with a polarized signal contact which is open when main contacts are closed, and inversely.; They will continue to function up to the short-circuit current.

• Status: Published
• Publication Date: 19-Dec-2023
• Withdrawal Date: 16-May-2022
• ICS: 49.060 - Aerospace electric equipment and systems
• Technical Committee: ASD-STAN - Aerospace
• Drafting Committee: ASD-STAN/D 2/S 5 - Protection Devices
• Current Stage: 6060 - Definitive text made available (DAV) - Publishing
• Start Date: 20-Dec-2023
• Completion Date: 20-Dec-2023
• Ref Project: SIST EN 2995-006:2024 - Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A - Part 006: 6,3 mm & 2,8 mm blade terminal with polarized signal contact - Product standard

• Refers: EN IEC 60934:2019 - Circuit breakers for equipment (CBE)
• Effective Date: 09-Feb-2026
• Refers: EN 2282:1992 - Aerospace series - Characteristics of aircraft electrical supplies
• Effective Date: 28-Jan-2026
• Refers: EN 2995-001:2023 - Aerospace series - Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A - Part 001: Technical specification
• Effective Date: 28-Jan-2026
• Referred By: EN 3841-100:2024 - Aerospace series - Circuit breakers - Test methods - Part 100: General
• Effective Date: 28-Jan-2026
• Referred By: EN 3155-002:2024 - Aerospace series - Electrical contacts used in elements of connection - Part 002: List and utilization of contacts
• Effective Date: 28-Jan-2026

Overview

EN 2995-006:2023 is a CEN product standard in the Aerospace series that defines the characteristics of single‑pole, temperature‑compensated circuit breakers with rated currents 1 A to 25 A, featuring 6.3 mm & 2.8 mm blade terminals and a polarized signal contact. These circuit breakers are intended for aircraft on‑board circuits and are qualified to operate between −55 °C and 125 °C and at altitudes up to 15 000 m. They use a push‑pull single push button (actuator) with delayed action “trip‑free” tripping and a signal contact that is open when the main contacts are closed (and vice versa). The devices are specified to continue functioning up to the short‑circuit current.

Key topics and technical requirements

• Rated range: 1 A to 25 A (single‑pole) for aircraft electrical systems.
• Terminal types: Blade terminals 6.3 mm and 2.8 mm; signal blade dimension: (2.8 ± 0.1) × (8.1 + 0.7) mm.
• Actuation & signaling: Push‑pull actuator, delayed “trip‑free” mechanism, polarized signal contact (open when main is closed).
• Environmental limits: Operational temperatures −55 °C to 125 °C, altitude ≤ 15 000 m.
• Mechanical & mounting: Panel thickness 1.5–3 mm; mass limits ≤ 19 g (conical barrel) or ≤ 20 g (nut version); tightening torque for threaded barrel (4.00 ± 0.25) N·m.
• Durability & loads: Terminal perpendicular tensile load up to 25 N (increments of 5 N, 1 min each) with permanent displacement ≤ 0.5 mm.
• Vibration & shock: Combined test at 70 °C: sinusoidal 10 g‑PK, random 5.8 Grms, low frequency 10 g‑PK; combined at 85 °C with altitude: sinusoidal 3 g‑PK; shock 50 g‑PK.
• Materials & finishes: Silver‑plated power blades (per EN IEC 60934 Annex E); signal contact gold plating 6–12 µm; body copper alloy.
• Interoperability: Receptacles must be mechanically/electrically compatible and corrosion‑resistant; assemblies should meet DO‑160 environmental criteria where applicable.

Applications and users

Who uses EN 2995-006:2023:

• Aerospace component manufacturers and suppliers producing circuit breakers and receptacles.
• Avionics and electrical system design engineers specifying protective devices for harnesses and power distribution.
• Certification and qualification teams validating equipment for DO‑160 environmental envelopes and aircraft installation.
• Procurement and maintenance personnel who require consistent interchangeability and markings for spares.

Typical applications:

• Aircraft on‑board power protection for lighting, instrumentation, avionics subcircuits and auxiliary systems where compact, temperature‑compensated, signalled protection is required.

Related standards

• EN 2995‑001 (technical specification for this circuit breaker family)
• EN IEC 60934:2019 (circuit breaker equipment, terminal plating guidance)
• EN 2282, TR 6083, DO‑160, and referenced procurement/color standards (e.g., AMS‑STD‑595) for compatibility and installation guidance.

Keywords: EN 2995‑006:2023, aerospace circuit breakers, single‑pole, temperature compensated, blade terminal 6.3 mm 2.8 mm, polarized signal contact, aircraft electrical protection.