OEM SJKM3L ELCB Earth Leakage Circuit Breaker - High Sensitivity 230V/415V from China Suppliers and Factory Suppliers, Factory

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OEM SJKM3L ELCB Earth Leakage Circuit Breaker - High Sensitivity 230V/415V from China Suppliers and Factory Suppliers, Factory

The SJKM3L ELCB Earth Leakage Circuit Breaker is a highly advanced solution for 230V/415V AC systems (50/60Hz), offering exceptional protection with its adjustable residual currents ranging from 30mA to 500mA and dual trip modes (non-delayed and time-delayed). Manufactured in China, this reliable ELCB comes in ratings of 125A and 160A, available in 2P, 3P, and 4P configurations. It boasts 800V insulation and a high-breaking capacity of up to 50kA, making it an ideal choice for both industrial and commercial applications, Our factory ensures that the SJKM3L ELCB is compliant with IEC60947-2 standards, featuring thermal-magnetic tripping, isolation functionality, and robust motor/distribution protection all within a compact design. With mechanical endurance capable of handling up to 40,000 cycles, this ELCB provides reliable ground-fault detection. As a trusted supplier, we prioritize safety and performance, ensuring our customers receive the best in electrical protection solutions

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Product Description

Type Designation

1	Technical Parameters
2	Mounting Holes
3	Product Model
4	Breaking Capacity
5	Compliance Standards
6	Manufacturer Name
7	Trip Button
8	Certification Mark
9	Circuit Breaker with Isolation Function
10	Manufacturer Logo
11	Rated Current
12	Rated Residual Operating Current
13	Ultimate Non-operating Time
14	Earth Leakage Indicator Button
15	Earth Leakage Test Button
16	Close, Trip, Open

Product Display

SJKM3L Earth Leakage Circuit Breaker (6)

SJKM3L Earth Leakage Circuit Breaker (4)

SJKM3L Earth Leakage Circuit Breaker (2)

SJKM3L Earth Leakage Circuit Breaker (5)

SJKM3L Earth Leakage Circuit Breaker (3)

SJKM3L Earth Leakage Circuit Breaker (1)

Technical Parameters

Model		SJKM3L-125			SJKM3L-160
Rated Voltage Ue (V)		230(2P)/400/415			230(2P)/400/415
Rated Current In (A)		16/20/25/32/40/50/63/80/100/125			100/125/140/160
Rated Insulation Voltage Ui (V)		800			800
Rated Impulse Withstand Voltage Uimp (kV)		8			8
Number of Poles		2/3/4(A,B)			2/3/4(A,B)
Rated Residual Operating Current I△n mA (3-step adjustable)	Non-delayed Type	30mA, 100mA, 300mA			30mA, 100mA, 300mA
		100mA, 300mA, 500mA			100mA, 300mA, 500mA
	Time-delayed Type	100mA, 300mA, 500mA			100mA, 300mA, 500mA
Rated Residual Non-operating Current I△no mA		50%I△n			50%△n
Non-delayed Type: Tripping Time s		≤0.1			≤0.1
Fixed Delay: 2I△n Ultimate Non-operating Time s (Special Order)		0.1/0.2/0.3/0.4/0.5/1			0.1/0.2/0.3/0.4/0.5/1
Adjustable Delay: Ultimate Non-operating Time at 2I△n s (Standard)		Y1: 0.1/0.2/0.3s			Y1: 0.1/0.2/0.3s
		Y2: 0.4/0.5/1s			Y2: 0.4/0.5/1s
Breaking Capacity		C (3/4P)	S	F (3/4P)	C (3/4P)	S	F (3/4P)
	Icu (415V)	20	35	50	20	35	50
	Ics (415V)	12	21	30	12	21	30
Rated Residual Short-circuit Making Capacity I△m (kA)		25%Icu	25%Icu		25%Icu	25%Icu
Mechanical Endurance	With Maintenance	20000	40000		20000	40000
	Maintenance-free	10000	20000		10000	20000
Electrical Endurance at 400V		4000	8000		4000	8000
Modular Accessory Installation		■			■
Isolation Function		■			■
Protection Type		Distribution Protection			Distribution Protection
		Motor Protection (Not available for 2P)			Motor Protection (Not available for 2P)
Tripping Method	Thermal-magnetic Trip	■			■
	Magnetic-only Trip	■			■
Connection Method
Fixed Front Terminal Connection		■			■
Fixed Rear Terminal Connection (No 2P)		■			■
Plug-in Rear Terminal Connection (No 2P)		■			■
Dimension (mm)	2P	62×150×72			75×165×74
	3P	92×150×93.5			107×165×94
	4P	122×150×93.5			142×165×94

SJKM3L Series Overcurrent Characteristic Curve Diagram

Left Diagram: SJKM1LE-125 Time-Current Characteristic Curve (Motor)
Right Diagram: SJKM1LE-250 Time-Current Characteristic Curve (Motor)

Left Diagram: SJKM1LE-400 Time-Current Characteristic Curve (Motor)
Right Diagram: SJKM1LE-630, 800 Time-Current Characteristic Curve (Motor)

Operating Principle Diagram

SJKM3L Series Plug-in Front/Rear Panel Hole Position Diagram

Frame		Number of Poles	A	A1	B	B1	C	D
Plug-in Front Connection	125	3	/	30	/	110	/	5
		4
	160/250	3	/	35	/	150	/	5
		4
Plug-in Rear Connection	125	3	94	60	40	67	90	5.5
		4	124	90
	160/250	3	110	70	45	74	100	6.5
		4	145	105
	400	3	157	88	60	145	170	8.5
		4	205	132
	630	3	212	140	62	143	185	11
		4	282	210

Frequently Asked Questions (FAQ)

Q What is the rated voltage range of the SJKM3L series earth leakage circuit breaker?

The SJKM3L series supports a rated operating voltage (Ue) of 230V for 2-pole units and 400V/415V for 3-pole and 4-pole configurations, making it completely compliant with global standard distribution networks.

Q What rated residual operating current options are available for the SJKM3L series?

The unit offers 3-step adjustable residual operating current ratings. Options for non-delayed types include 30mA, 100mA, 300mA, or 100mA, 300mA, 500mA. The time-delayed variant provides adjustable options of 100mA, 300mA, and 500mA.

Q What breaking capacity levels does the SJKM3L series provide?

Three breaking capacity levels are available at 415V: Class C (Standard) with Icu of 20kA and Ics of 12kA; Class S (High) with Icu of 35kA and Ics of 21kA; and Class F (Extra High) with Icu of 50kA and Ics of 30kA.

Q Does the SJKM3L circuit breaker support an isolation function?

Yes, the SJKM3L series is certified with an integrated isolation function, enabling the breaker to provide secure physical electrical isolation during scheduled downstream maintenance operations.

Q What connection methods are available for the SJKM3L series?

The system supports three standard industrial connection styles: Fixed Front Terminal Connection across all models, as well as Fixed Rear Terminal Connection and Plug-in Rear Terminal Connection for 3P and 4P configurations.

Q What are the standard dimensions for SJKM3L-125 and SJKM3L-160 models?

For SJKM3L-125, outer dimensions are: 2P (62×150×72mm), 3P (92×150×93.5mm), and 4P (122×150×93.5mm). For SJKM3L-160: 2P (75×165×74mm), 3P (107×165×94mm), and 4P (142×165×94mm).

OEM SJKM3L ELCB Earth Leakage Circuit Breaker - High Sensitivity 230V/415V from China Suppliers and Factory Suppliers, Factory

Product Description

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