19046

What does this device do?

This unit is an add-on residual current device designed to provide earth leakage protection when fitted with a compatible Schneider NG125 circuit breaker. It helps detect leakage current to earth and trips the circuit when the set threshold is reached.

Is this a standalone protective device?

No. This is an add-on block rather than a standalone unit. It is intended to be mounted and connected to a compatible NG125 breaker, forming a combined protection assembly.

What pole configuration does it have?

It is a 4-pole device, making it suitable for applications where four poles need to be monitored and switched together.

What is the rated current of this unit?

The rated current is 125 A. In the Schneider 19046 configuration, this allows it to be paired with suitable high-current arrangements within the NG125 range.

What earth leakage sensitivity options are available?

This model provides selectable earth leakage sensitivity options of 300 mA, 500 mA and 1000 mA, giving flexibility for installations that require different leakage trip thresholds.

What type of earth leakage protection does it offer?

It is a Type A residual current device. Type A protection is designed to detect alternating residual currents as well as pulsating DC residual currents, which can be relevant in a wide range of modern electrical circuits.

Can the trip delay be adjusted?

Yes. The unit offers adjustable instantaneous or selective earth leakage protection timing, which can be useful where discrimination between upstream and downstream protective devices is required.

What operating voltage is it designed for?

The rated operational voltage is 230 to 415 V AC at 50/60 Hz, making it suitable for common low-voltage AC distribution arrangements.

How is the device mounted?

It is designed for mounting on a 35 mm symmetrical DIN rail. This makes it suitable for installation in many industrial and commercial switchboards.

How does it connect electrically?

The unit connects to the associated miniature circuit breaker by screw connection. Its terminals are tunnel type, with conductor capacities of 10 to 50 mm² for flexible cable and 16 to 70 mm² for rigid cable.

What are the physical dimensions?

The device measures 118 mm high, 207 mm wide and 81 mm deep, with a net weight of approximately 0.8 kg. These dimensions can help when checking available rail and enclosure space.

What level of enclosure protection does it have?

This unit is rated IP40 in accordance with IEC/EN 60947-2. That rating indicates protection against solid objects of limited size, so the final installed protection level will also depend on the enclosure it is fitted into.

What standards does it conform to?

It conforms to IEC/EN 60947-2 Annex B. The datasheet also states an impulse withstand capability of 8 kV and electromagnetic compatibility performance including 8/20 µs impulse withstand up to 5000 A.

What is the electrical durability of the unit?

The stated electrical durability is 10,000 cycles under IEC/EN 60947-2. This gives a useful indication of the device’s endurance in service under appropriate operating conditions.

Where is this type of device commonly used?

This kind of add-on earth leakage block is commonly used in industrial distribution boards, commercial switchboards and larger building electrical systems where residual current protection is required alongside a compatible breaker arrangement.