Circuit breaker Legrand 412911 — dimensions 100×184×88 mm, pack of 10

Legrand 412911 is a pack of 10 compact circuit breakers designed for electrical protection and switching where a single-module device with specific dimensions is required. Each unit measures 100×184×88 mm and integrates a common contact configuration with both normally open and normally closed contacts. The device conforms to IEC 60669-1 and is intended for installation in distribution panels, control cabinets and other commercial or industrial electrical systems that require a reliable switching component with prong-type busbar compatibility.

Advantages

The breaker offers a nominal rating of 20 A at 250 V~ and is compatible with fluorescent lamp loads (20 AX), ensuring correct switching under mixed resistive and inductive conditions. Its 1 NO + NC contact arrangement provides flexible wiring options for control circuits and safety interlocks. The compact single-module format and ability to accept prong-type supply busbars simplify installation in space-constrained panels and standardized mounting systems. Supplied as a pack of 10, this product supports bulk installations and panel standardization.

Suitable for

• Protection and switching in distribution panels and consumer units
• Control cabinets in commercial and light industrial environments
• Circuits controlling fluorescent lighting and mixed loads
• Applications requiring a single-module device with prong-type busbar connection

Key specifications

• Nominal current: 20 A
• Rated voltage: 250 V AC
• Compliance: IEC 60669-1
• Contact configuration: 1 normally open + 1 normally closed
• Module count: 1 module
• Compatibility: fluorescent lamps (20 AX)
• Supply connection: accepts prong-type busbars
• Unit dimensions (W×D×H): 100 × 184 × 88 mm
• Package quantity: 10 units

How to use

Install each device in a suitable DIN-rail or panel cutout following local electrical codes and the panel manufacturer's instructions. Ensure circuit voltage does not exceed the rated 250 V AC and that load currents remain within the 20 A nominal rating. Connect supply and load conductors to the appropriate terminals and verify compatibility with prong-type busbars when using busbar feeding. Use the NO and NC contacts according to the control logic required by the application, and verify correct operation before energizing the complete system.

Usage recommendations

Perform initial functional checks and torque terminal connections to the manufacturer's recommended values. Avoid exceeding the rated current and voltage limits; when switching inductive loads such as ballasted fluorescent fixtures, confirm the 20 AX compatibility for reliable operation. For bulk installations, standardize mounting orientation and wiring practices to simplify maintenance and replacement.