Residual-current circuit breaker Eti-Polam KZS-2M 2P 16A B 0.03A type AC (MPN 002173104)

Eti-Polam KZS-2M 2P 16A B 0.03A type AC is a two-pole residual-current circuit breaker with integrated overcurrent protection designed for residential and small commercial installations. The device combines short-circuit and overload protection with earth-fault detection at 30 mA sensitivity, providing a compact solution for protecting lighting circuits, socket outlets and branch circuits against overloads, short circuits and dangerous leakage currents.

Advantages

The unit integrates residual-current detection and magnetic–thermal overcurrent protection in a single compact module, reducing the number of devices required in a distribution board. With B characteristic tripping the breaker responds appropriately to moderate inrush currents from typical household and commercial loads. The 30 mA residual-current sensitivity offers protection against indirect contact and reduces the risk of electric shock. The two-pole configuration enables simultaneous disconnection of live and neutral conductors for safer maintenance and compliance with common wiring practices.

Suitable for

• Protection of lighting circuits in homes and small offices
• Socket outlet circuits supplying general-purpose appliances
• Branch circuits in small commercial or residential distribution boards
• Locations requiring 30 mA personal protection against earth leakage

Key specifications

• Poles: 2 (two-pole switching)
• Rated current: 16 A
• Tripping characteristic: B-type (suitable for typical inrush currents)
• Residual-current sensitivity: 0.03 A (30 mA), type AC (AC sinusoidal fault currents)
• Combined functions: residual-current detection plus overcurrent and short-circuit protection

How to use

Install the device in the distribution board on a compatible DIN rail according to local electrical standards. Connect the supply and load conductors to the labeled terminals, ensuring correct live and neutral wiring for two-pole disconnection. Verify that the rated current and characteristic are suitable for the protected circuit and that upstream and downstream protective devices are coordinated. Perform insulation and continuity checks before energizing, then test the residual-current trip function using a test button or appropriate test equipment to confirm operation at 30 mA.

Usage recommendations

Use this device for final circuits where both overcurrent protection and earth-fault detection are required. Do not use it where residual currents with DC components or highly distorted waveforms are expected unless devices rated for those conditions are specified. Periodically test the residual-current trip function according to local regulations and replace the unit if mechanical wear or electrical malfunction is detected.