ZGLEDUN Series LDM9L-(CM1) MCCB molded Case Circuit Breaker, RCCB Residual Current Residual Current operated Cicuit-breaker with Integral Overcurrent Protection RCBO

Short Description:

ZGLEDUN Series LDM9L（CM1-Type) MCCB molded case circuit breaker with overcurrent protecton is one of the new circuit breakers developed by our company with international advanced design and manufacturing technology. It’s also called RCBO Residual Current operated Cicuit-breaker with Integral Overcurrent protection. Its rated insulation voltage is 800V. It is suitable to be used for infrequent conversion and infrequent starting of the electromotor in circuits of AC 50Hz/60Hz, rated voltage of not higher than 400V and the rated working current up to 630A. The circuit breaker has functions of overload, short circuit and undervoltage protection, which can protect the circuit and power equipment from damage. At the same time, it can also provide protection against fire hazards that may be caused by long-term ground faults that cannot be detected by overcurrent protection function.

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Product Description:

Circuit breakers are classified into M type (Medium high breaking type) and H type (high breaking type) according to their rated limit short-circuit breaking capacity (Ieu). This molded case circuit breaker has the characteristics of small size, high breaking, short arcing, and anti-vibration.

This MCCB can be customized to suit your needs.

Normal Working Conditions

◆Ambient medium temperature: not higher than +40℃ (+45℃ for common products) and not lower than -5℃. The average value of 24h does not exceed +35℃ (+40℃ for common products )
◆ Installation location: The altitude does not exceed 2000m;
◆ Installation location: The relative humidity of the air does not exceed 50% when the highest temperature is +40℃. It can have a higher relative humidity at a lower temperature. For example, relative humidity 90% at 20℃. Special measures should be taken for suspected exposure occasionally due to temperature changes.
◆ Installation category:
Main circuit of the circuit breaker and the undervoltage release: Grade III
Auxiliary circuits and control circuits: Grade II
◆ The circuit breaker can withstand the influence of humid air, salt mist, oil mist, mold and nuclear radiation.
◆ The maximum inclination of the circuit breaker installation is ±22.5°
◆ The circuit breaker can work reliably under earthquake conditions (4g);
◆ The circuit breaker should be installed in a place where there is no danger of explosion, no conductive dust, no corrosion of metal and no damage to insulation.
◆The circuit breaker should be installed in a place where there is no rain or snow.

Classification of Circuit Breaker

• Type A: The N pole is not equipped with an overcurrent release ( Shunt Trip ). The N pole is always on, and it is not switched on/off together with the other three poles.
• Type B: The N pole is not equipped with an overcurrent release ( Shunt Trip ) and is switched on/off together with other three poles (N pole is closed first and then opened).
• Type C: The N pole is installed with an overcurrent release ( Shunt Trip ) , and is switched on/off together with the other three poles (the N pole is off first and then on).
• Type D: N pole is installed with an overcurrent release ( Shunt Trip ) . The N pole is always on, and it is not switched on/off together with other three poles.

Rated current (A) :

• LDML9-125: (10A), 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A, 125A
• LDM9L(CM1)-250: 100A, 125A, 140A, 160A, 180A, 200A, 225A, 250A
• LDM9L(CM1)-400 : 225A, 250A, 315A, 350A, 400A
• LDW9L(CM1)-630: 400A, 500A, 630A
• LDM9L(CM1)-800: 630A, 700A, 800A
[specification With ( ) is not recommended ]

Four Types of Wiring Method:
(1)Front-panel Wiring
(2)Back-panel Wiring
(3)Front-panel-inserted
(4)Back-panel-inserted

Two Types of Overcurrent Release (Shunt Trip):
(1)Thermal-electromagnetic (duplex) type
(2)Electromagnetic (instantaneous) type

Accessories of MCCB Molded Case Circuit Breaker : (1) with accessories and (2) without accessories.
There are internal accessories and external accessories.
Internal accessories include shunt trip, undervoltage release, auxiliary contact, and alarm .
External accessories include rotating handle operating mechanism, electric operating mechanism, interlocking structure, and wiring terminal blocks for auxiliary devices.

Series LDM9L（CM1) MCCB Molded Case Residual Current Residual Current operated Cicuit-breaker with Integral Overcurrent Protection
Image	Model No.	Poles	Unit	Quantity/Carton
	LDM9L-125M/3300	3P	PC	8
	LDM9L-250M/3300	3P	PC	8
	LDM9L-400M/3300	3P	PC	4
	LDM9L-630M/3300	3P	PC	2
	LDM9L-800M/3300	3P	PC	2
	LDM9L-125M/4300	4P	PC	8
	LDM9L-250M/4300	4P	PC	8
	LDM9L-400M/4300	4P	PC	2
	LDM9L-630M/4300	4P	PC	2
	LDM9L-800M/4300	4P	PC	2
Products can be customized to suit your needs.