Circuit Breaker 3P C 50A Eti-Polam (model 002145521) – three-pole, C curve, 50 A

Circuit Breaker 3P C 50A Eti-Polam is a three-pole, C-curve miniature circuit breaker designed for protection of three-phase electrical installations. The device interrupts current in the event of overloads and short circuits and is intended for DIN-rail mounting in commercial and industrial distribution boards. Its C-type trip characteristic provides selective tripping for circuits with moderate inrush currents, such as motors and certain lighting loads.

Advantages

The breaker offers reliable thermal-magnetic protection with a defined C tripping curve that balances sensitivity to short circuits and tolerance for temporary inrush currents. Compact DIN-rail form factor enables straightforward installation in standard distribution panels. Built from materials suitable for industrial environments, it provides consistent operation for branch circuit and motor feeder protection while facilitating safe isolation of three-phase lines.

Suitable for

• Protection of three-phase branch circuits in commercial and industrial distribution boards
• Motor feeders and circuits with moderate inrush currents
• General three-pole circuit protection where coordinated tripping is required

Key specifications

• Poles: 3 (three-pole)
• Rated current: 50 A
• Tripping characteristic: C curve (thermal-magnetic)
• Mounting: DIN-rail compatible
• Application: overload and short-circuit protection for three-phase circuits

How to use

Install the circuit breaker on a compatible DIN-rail inside the distribution board, ensuring secure mechanical attachment and correct orientation. Connect the three-phase supply and load conductors to the input and output terminals respectively, following safe electrical practices and local wiring regulations. Verify that the breaker’s rated current and C-type characteristic match the protected circuit requirements. After installation, perform insulation and continuity checks and restore power to confirm correct operation.

Usage recommendations

Use this breaker in circuits where a 50 A rated device with C-curve characteristics is appropriate; coordinate with upstream and downstream protection devices to ensure selectivity. Periodically inspect terminal tightness and the housing for signs of damage or overheating, and replace the device if mechanical or electrical defects are found.