Eaton 170957 RCBO tetrapolar 16A 0,3A tipo A curva B 415V AC 10kA calha DIN

Protect your circuits with the Eaton 170957, a 4-pole residual current circuit breaker with overcurrent protection (RCBO) rated at 16 A with a 300 mA residual current sensitivity. Designed for 415 V AC systems, it combines short-circuit and earth fault protection in a compact 4-module DIN rail device.

Overview

The Eaton 170957 is a 4-pole RCBO with a rated current of 16 A and a rated residual current of 0.3 A (300 mA). It operates at a rated voltage of 415 V AC and features a Type A residual current characteristic, suitable for detecting AC and pulsating DC fault currents. The tripping characteristic is B, with a short-circuit breaking capacity of 10 kA. The device mounts on a DIN rail and occupies 4 modules (70 mm width).

What stands out

• 4-pole design for three-phase systems
• Type A residual current protection (AC and pulsating DC)
• 10 kA breaking capacity for robust short-circuit protection
• Compact 4-module width saves space in distribution boards

Technical details

• Number of poles: 4
• Rated current (In): 16 A
• Rated residual current (IΔn): 0.3 A (300 mA)
• Rated voltage (Ue): 415 V AC
• Tripping characteristic: B
• Type of residual current: Type A
• Short-circuit breaking capacity (Icn): 10 kA
• Frequency: 50/60 Hz
• Mounting type: DIN rail
• Module width: 4 modules (70 mm)
• Degree of protection: IP20 (terminals), IP40 (enclosure)
• Standards: IEC/EN 61009
• Terminal type: screw terminals
• Rated impulse withstand voltage (Uimp): 4 kV
• Operating temperature range: -25°C to +50°C
• Connection capacity: 1-25 mm² (solid/stranded)

Our verdict

A reliable and compact RCBO for three-phase circuits, offering combined protection against overcurrent and earth faults with a high breaking capacity. Ideal for industrial and commercial installations.