Circuit Breaker 3P B 40A Eti-Polam model 002115520, three-pole B curve 40 A

Three-pole circuit breaker Eti-Polam model 002115520 with B tripping characteristic and rated current 40 A is a compact DIN-rail mounted protection device for three-phase installations. It provides combined thermal and magnetic protection against overloads and short circuits, ensuring selective interruption of faulty circuits in residential, commercial or light-industrial distribution boards. The device is intended for standard low-voltage networks where a B curve is required for moderate inrush currents.

Advantages

The three-pole design offers simultaneous disconnection of all phases to improve safety and prevent phase-to-phase faults. A B curve trip characteristic gives sensitive protection for circuits with mostly resistive loads and limited start-up currents. DIN-rail format makes installation and replacement straightforward in standard consumer units and distribution panels. The product's compact dimensions allow efficient use of panel space while maintaining required thermal-magnetic protection.

Suitable for

• Protection of three-phase lighting and socket circuits in homes and apartments
• Small commercial electrical panels with moderate motor or transformer inrush
• Selective protection in distribution boards where simultaneous phase disconnection is needed

Key specifications

• Poles: 3 (three-pole)
• Rated current: 40 A
• Tripping characteristic: B curve (thermal-magnetic)
• Mounting: DIN-rail
• Function: Overload and short-circuit protection
• Application voltage range: standard low-voltage three-phase networks

How to use

Install the circuit breaker on a standard DIN-rail inside the distribution board, following local electrical regulations and ensuring correct terminal tightening. Connect phase conductors to the input and output terminals in the correct order and verify polarity. Use the device as the dedicated protective element for the targeted three-phase circuit and do not exceed the rated current. After installation, test the breaker by operating the manual toggle and perform routine inspection for secure connections and signs of wear.

Usage recommendations

Choose this 40 A B-curve three-pole breaker when circuits have primarily resistive loads or limited inrush currents; for motors or high inrush devices consider a different trip curve. Ensure installation and maintenance are performed by a qualified electrician and conform to local standards for protective devices and panel wiring.