NT16H1

What type of device is this?

It is a MasterPact NT moulded-frame air circuit breaker designed for power distribution protection in industrial and commercial low-voltage electrical systems.

What is the rated current?

The circuit breaker has a rated current of 1,600 A at an ambient reference temperature of 40°C.

What is the maximum rated operational voltage?

The rated operational voltage is up to 690 V AC at 50/60 Hz.

What short-circuit breaking capacity does it provide?

The H1 performance rating provides an ultimate short-circuit breaking capacity of 42 kA at 220/415 V, 440 V, 525 V and 690 V AC.

How many poles does this circuit breaker have?

The documented NT16H1 circuit breaker frame is a three-pole configuration intended for three-phase power distribution applications.

Is it suitable for electrical isolation?

Yes. The circuit breaker is suitable for isolation in accordance with EN/IEC 60947-2.

Is the mounting arrangement fixed or drawout?

The NT16H1 range includes both fixed and drawout configurations. The exact mounting arrangement should be confirmed against the complete equipment specification, as a drawout version requires a compatible chassis.

Does the circuit breaker include a control unit?

The documented frame configurations are supplied without a control unit. A compatible trip or control unit must therefore be selected according to the required protection functions.

What short-time withstand current is specified?

The rated short-time withstand current is 42 kA for 0.5 seconds or 1 second, and 24 kA for 3 seconds.

What is the rated short-circuit making capacity?

The rated short-circuit making capacity is 88 kA across the documented operational voltages from 220/415 V to 690 V AC.

What are the operating temperature limits?

The specified ambient operating temperature range is -25°C to 70°C. The storage temperature range is -40°C to 85°C.

What environmental protection rating does it have?

The circuit breaker has an IP30 degree of protection in accordance with IEC 60529.

Which electrical standards does it conform to?

The device is designed in accordance with EN/IEC 60947-1 and EN/IEC 60947-2.

What is its expected mechanical endurance?

The specified mechanical endurance is 12,500 operating cycles without maintenance.

What are the approximate dimensions of the fixed version?

The fixed three-pole frame measures approximately 301 mm high, 276 mm wide and 196 mm deep, with a net weight of about 14 kg.

What are the approximate dimensions of the drawout version?

The drawout three-pole frame measures approximately 322 mm high, 288 mm wide and 277 mm deep, with a net weight of about 30 kg.

Can it operate at high altitude?

It can operate at altitudes up to 2,000 metres without derating. Operation between 2,000 and 5,000 metres requires appropriate derating.

Where is this circuit breaker commonly used?

Typical applications include main switchboards, distribution panels, industrial power systems, large commercial buildings and installations requiring high-current circuit protection and isolation.