1250 Amp 3 Pole 600v Mccb Circuit Breaker

To achieve a fast delivery, Wenzhou XiFa Electric Power Equipment Co., Ltd produce regular model mccb circuit breaker to storage such as 1250 amp 3 pole 600v mccb circuit breaker. In general speaking, Wenzhou XiFa Electric Power Equipment Co., Ltd could supply 1250 amp 3 pole 600v mccb circuit breakers within 7 days. Ever more, Wenzhou XiFa aims to produce and supply each 3 pole and 4 pole mccb molded case circuit breaker with fast delivery time and solid quality. Each 1250 amp 3 pole 600v mccb circuit breaker will take a series of factory test to ensure a smooth using experience.

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Product Description

A 1250 amp 3 pole 600v mccb circuit breaker mainly consists of three basic parts, which is the contact system, the arc extinguishing system, and trip units. These trip units provide different protection functions, including over current protection, under voltage protection, thermal protection, and shunt tripping. A 1250 amp 3 pole 600v mccb circuit breaker is closed either manually or by a motorized driver. Once the contacts are closed, they are held in position by a trip free mechanism. When a fault occurs, the corresponding trip unit activates the mechanism, releasing the latch and causing the 1250 amp 3 pole 600v mccb circuit breaker to trip automatically, thereby protecting the circuit.

1. Shunt trip unit

The shunt trip is used for remote control operation. It allows the circuit to be opened through a 1250 amp 3 pole 600v mccb circuit breaker from a distance.

2. Over current trip unit

This unit provides protection against short circuits and over current. When the current exceeds the preset value, the electromagnetic force generated by the trip unit releases the latch. The moving contact then separates rapidly under spring force, interrupting the circuit.

3. Under voltage trip unit

This unit provides protection against voltage loss. Its coil is directly connected to the power supply and remains energized under normal conditions, which allows the 1250 amp 3 pole 600v mccb circuit breaker to stay closed. When the supply is lost or the voltage drops significantly, the magnetic force weakens and becomes lower than the spring force. The spring then drives the moving core, releasing the latch and causing the 1250 amp 3 pole 600v mccb circuit breaker to trip.

4. Thermal trip unit

When an overload current flows through the 1250 amp 3 pole 600v mccb circuit breaker, the bimetal strip inside the thermal trip unit heats up due to the current. Because the two metals have different coefficients of expansion, they bend at different rates when heated. This deformation pushes the tripping mechanism, causing the 1250 amp 3 pole MCCB molded case circuit breaker to open and interrupt the circuit.

1250 Amp 3 Pole 600v Mccb Circuit Breaker

1250 amp 3 pole 600v mccb circuit breaker parameter:

Rated Frame Current	1250
Number of Poles	3 pole; 3P; 3 phase
Rated Working Current	630A; 700A; 800A; 1000A
Frequency	60 Hz/50 Hz
Ultimate Short Circuit Breaking Capacity	50kA or 70kA
Service Short Circuit Breaking Capacity	35kA or 50kA
Rated Working Voltage	660 V; 690 V
Rated Insulation Voltage	1000 V
Mechanical Service Life	10000 times
Electrical Service Life	2000 times
Arc distance	≤100 mm

Size

Product Mode	Pole	Dimension
Product Mode	Pole	L	L1	L2	W	W1	W2	H	H1
M1-63L	2	136	85	117	55	14	25	89	65
	3	136	85	117	78	14	25	89	65
	4	136	86	117	102	14	25	89	65
M1-63M	3	136	85	117	78	14	25	98	74
M1-63M	4	136	86	117	102	14	25	98	74
M1-125L	2	150	88.5	133.5	63	18	30.5	88.5	62
	3	150	88.5	133.5	92	18	30.5	88.5	62
	4	150	88.5	133.5	122	18	30.5	88.5	62
M1-125M	3	150	88.5	133.5	92	17	30.5	105	79
M1-125M	4	150	88.5	133.5	122	17	30.5	105	79
M1-250L	2	165	102	144	74	23	35.5	110	81
	3	165	102	144	107	23	35.5	110	81
	4	165	102	144	142	23	35.5	110	81
M1-250M	3	165	102	144	107	23	35.5	126	99
M1-250M	4	165	102	144	142	23	35.5	126	99
M1-400	3	257	174	225	150	30	48	153	98
M1-400	4	257	174	225	198	30	48	153	98
M1-630	3	270	185	237	180	44	58	160	104
M1-630	4	270	185	237	240	44	58	160	104
M1-800	3	280	205	243	210	46	70.5	155	110
M1-800	4	280	205	243	280	46	70.5	155	110
M1-1250	3	470	265	330	210	46	70	191	137
M1-1250	4	470	265	330	280	46	70	191	137
M1-1600	3	470	265	330	280	46	70	191	137