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GTM3E MCCB Electronic Molded Case Circuit Breaker

GTM3E MCCB Electronic Molded Case Circuit Breaker

Electronic molded case circuit breaker is one of the new circuit breakers developed and manufactured by our factory using internationally advanced design and manufacturing technology. Its rated insulation voltage is 800V, suitable for AC 50Hz, rated working voltage 400V, in circuits with rated working current up to 800A for infrequent conversion and infrequent motor starting. The circuit breaker has overload long-time inverse time, short-circuit short-time inverse time, short-circuit short-time definite time, short-circuit instantaneous and undervoltage protection functions, protecting circuits and power supply equipment from damage. The circuit breaker can be installed vertically (upright) or horizontally (flat).


Rated Current:	32A 63A 100A 225A 400A 630A 800A
Phase:	3
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Model:
GTM3E
Brand:
Giantele
Rated Voltage:
380V, 400V, 440V
Rated Current:
16-800A
Phase:
3/4
MOQ:
1pcs

Overview

Molded case residual current circuit breaker (hereinafter referred to as residual current operated circuit breaker) is suitable for AC 50Hz, rated voltage up to 400V, in circuits with rated current from 16A to 800A. Its main function is to provide indirect contact protection against fatal electric shock to personnel. Residual current operated circuit breakers with rated residual operating current not exceeding 30mA can also serve as supplementary protection for direct contact when other protective measures fail, but cannot be used as the sole direct contact protection. Meanwhile, it can also be used to prevent electrical fires caused by contact fault currents. It can also be used to protect circuits from overload and short circuit, and as infrequent switching of circuits.

Product Features

With three-stage protection (LSI) featuring adjustable actuation current and time, self-powered operation: Provides adjustable Long-time (L), Short-time (S), and Instantaneous (I) protection with configurable actuation current and time settings, powered by its own source.
Users can set and adjust the trip unit according to load current requirements: Allows users to configure the trip unit settings based on specific load current demands.
With pre-alarm indication and overload indication: Equipped with a pre-alarm warning function and a clear overload indication.
Features a fire protection mode where overload triggers alarm only without tripping: Includes a dedicated function for fire service applications where overload conditions activate an alarm only without causing the breaker to trip.
A handheld dedicated tester is provided for user convenience in detecting circuit breaker parameters: Comes with a portable, specialized tester to facilitate easy checking and verification of circuit breaker parameters for users.

Applicable Working Environment and Installation Conditions:

The altitude of the installation site shall not exceed 2,000m.
The ambient air temperature shall not exceed +40°C and shall not be lower than -5°C, with a 24-hour average value not exceeding 35°C (unless otherwise specified in special orders).
The relative air humidity at the installation site shall not exceed 50% at the maximum temperature of +40°C. At lower temperatures, higher relative humidity is permissible, e.g., up to 90% at 20°C. Special measures shall be taken against occasional condensation due to temperature variations.
For tropicalized circuit breakers, the relative air humidity shall not exceed 95% at ±25°C.
Pollution Degree: Level 3.
The installation category of the main circuit of the circuit breaker is Category III, while auxiliary and control circuits not connected to the main circuit are Category II.
Tropicalized circuit breakers shall withstand the effects of humidity, salt mist, and mold.
The circuit breaker shall be installed in locations free from explosion hazards, conductive dust, and conditions that may corrode metals or cause insulation damage.
It shall be installed in places without exposure to rain or snow.
The circuit breaker shall be installed in accordance with the product's instruction manual.

Technical Data

hstand current lcw(kA)1s

Model		KJM3E-125		KJM3E-250		KJM3E-400		KJM3E-630		KJM3E-800
Frame current Inm(V)		125		250		400		630		800
Breaking capacity level		M	H	M	H	M	H	M	H	M	H
Rated currentlr1(A)		32 (16,20,25,32) 63 (32),36,40,45 ,50,55,60,63) 100 (63),65,70 ,75,80,85,90 ,95,100)		225 (100,125 ,140,160,180,200 ,225)		400 (200,225,250 280,315 ,350,400)		630 (400,420,440 460,500,530,560 600,630)		800 (630,640,660 680,700,720,740 760,780,800)
Number of poles		3		3		3		3		3
Rated insulation voltage Ui(V)		800
Rated operating voltage Ue(V)		400
Rated impulse withstand voltage Uimp(V)		8000
Rated ultimate short-circuit breaking capacity lcu(kA)		50	85	50	85	65	100	65	100	75	100
Rated operating short-circuit breaking capacity lcs(kA)		35	50	35	50	42	65	42	65	50	65
Rated operating short-circuit wit							5		8		10
Use Category			A		A		B		B		B
Arcing distance(mm)		≯50				≯100
Operational performance	Power on (times)	1500		1000		1000		1000		500
	No power (times)	8500		7000		4000		4000		2500

Power loss

Model	Current(A)	Total three-phase power loss
Model	Current(A)	Front and rear panel wiring	Plug-in wiring
KJM3E-125	100	35	40
KJM3E-250	225	62	70
KJM3E-400	400	115	125
KJM3E-630	630	190	210
KJM3E-800	800	262	294

The derating factor when the ambient temperature changes

Model	+40℃	+45℃	+50℃	+55℃	+60℃
KJM3E-125	1ln	0.95ln	0.89ln	0.84ln	0.76ln
KJM3E-250	1ln	0.96ln	0.91ln	0.87ln	0.82ln
KJM3E-400	1ln	0.94ln	0.87ln	0.81ln	0.73ln
KJM3E-630	1ln	0.91ln	0.85ln	0.80ln	0.74ln
KJM3E-800	1ln	0.881ln	0.83ln	0.79ln	0.76ln

Note: The above derating factors are all measured under the rated current of the frame.

The long-delay overcurrent protection inverse time action characteristics

Current		Action time
Power distribution	1.05lr1	2hNo action inside
	1.3lr1	≤1h action
	2lr1	Setting time T1(s)	INM=100,225A				INM=400,630,800A
	2lr1	Setting time T1(s)	12	60	80	100	12	60	100	150
Motor protection	1.05lr1	2hNo action inside
	1.2lr1	≤ 1haction
	1.5lr1	Action time T1(s)	INM=100,225A				INM=400,630A
	1.5lr1	Action time T1(s)	21.3	107	142	178	21.3	107	178	267
	2lr1	Action time T1(s)	12	60	80	100	12	60	100	150
	7.2lr	Setting timeT1(s)	0.93	4.63	6.17	7.72	0.93	4.63	7.72	11.6

Note:

1. Action time load I²T1 = (2lr1)²t1(1.2Ir≤ 1 <Ir2);

2. The action time tolerance is ± 20%;

3. The return time is not less than the action time 70%.

Short-time overcurrent

Current	Action time
Ir2≤ 1≤1.5lr2	Inverse time limit		l²T1=(1.5lr1)²t2
1.5lr2≤1 ≤ Ir3		Setting timet2(s)	0.06	0.1	0.2	0.3
(Note: The tolerance of inverse time action is ±20%)	Time limit	Tolerance(s)	±0.02	±0.03	±0.04	±0.06
(Note: The tolerance of inverse time action is ±20%)		Return time(s)			0.14	0.21