4P 63A /30mA Residual Current Circuit Breaker

4P 63A /30mA Residual Current Circuit Breaker is a residual current circuit breaker with four poles (P), which has a rated current of 63A and a residual action current (i.e., leakage action current) of 30mA.The RCCB is mainly used for detecting residual currents in a circuit, and when this current exceeds the set value, the circuit breaker automatically cuts off the circuit to prevent electrocution accidents and electrical fires.

Model:ST60

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Product Description

STANDARD:	IEC 61008-1
Model:	ST60
Residual current characteristics:	A, AC
Pole No.:	2P, 4P
Rated current:	16A, 25A, 32A, 40A, 63A;
Rated voltage:	230/400V AC
Rated frequency:	50/60Hz
Rated Residual Operating Current IΔn:	10mA,30mA, 100mA, 300mA, 500mA
Rated Residual Non-operating Current I Δno:	≤0.5IΔn
Rated conditional short-circuit current Inc:	6000A
Rated conditional residual short-circuit current IΔc:	6000A
Tripping duration:	Instantaneous tripping≤0.1Sec
Residual tripping current range:	0.5IΔn~IΔn
Electro-mechanical endurance:	4000 Cycles
Fastening torque:	2.0Nm
Connection terminal:	Screw terminal Pillar terminal with clamp
Installation:	35mm Din rail mounting

Principle of operation

The working principle of 4P 63A /30mA Residual Current Circuit Breaker is based on the principle of electromagnetic induction. When the residual current in the circuit exceeds the set value, a magnetic flux proportional to the residual current will be generated, and this flux will drive the release mechanism to act, making the circuit breaker cut off the circuit quickly. At the same time, RCCB also has overload and short-circuit protection function, when the current in the circuit exceeds the rated value, it also triggers the action of the stripping mechanism.

Main Features

Four-pole design: 4P means that the circuit breaker has four terminals, usually used in three-phase four-wire or single-phase three-wire circuits, capable of cutting off all phase and zero (or neutral) currents at the same time.

High rated current: 63A rated current makes the circuit breaker able to carry larger loads, suitable for the protection of high-power electrical equipment.

Sensitive leakage detection: The residual action current setting of 30mA is very low, which can quickly detect tiny leakage in the circuit and cut off the circuit in time to ensure the safety of personnel and equipment.

Safe and reliable: RCCB adopts advanced release mechanism and contact materials with excellent electrical and mechanical properties, which can ensure timely cutting off the circuit in case of faults such as overload, short circuit and leakage to prevent accidents.

Application Scenario

4P 25A/30mA RCCB is widely used in a variety of situations that require electrical protection, such as:

Residential and commercial buildings: used to protect electrical equipment and personal safety, preventing electric shock accidents and electrical fires.

Industrial production lines: used to protect electrical equipment such as motors, transformers and other electrical equipment from normal operation, preventing equipment damage and shutdown due to leakage, overload and other reasons.

Public facilities: such as hospitals, schools, libraries and other places, used to ensure the safe operation of electrical equipment and the safe use of electricity by personnel.

4P 63A /30mA Residual Current Circuit Breaker