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Home > Circuit Breaker > OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies
OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies
OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies
OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies
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OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies
OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies
OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies

OEM SJKM1L Earth Leakage Circuit Breaker ELCB for Industrial Safety Factories, Companies

The SJKM1L Earth Leakage Circuit Breaker ELCB provides comprehensive electrical protection for 400V/50Hz systems (up to 800A). This SJKM1L ELCB combines overload, short-circuit, and 30mA-30A residual current protection to prevent fire hazards from ground faults. Available in M-type (molded case) and H-type (high-breaking capacity) versions, it features 800V insulation and vibration resistance. The breaker's compact design allows for both vertical and horizontal installation in distribution panels. This SJKM1L ELCB is ideal for motor circuits, industrial plants, and power distribution systems requiring infrequent switching and reliable earth leakage protection. 

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Product Description

Type Designation
Type Designation Chart
①Manufacturer Code
②Molded Case Circuit Breaker (MCCB)
③Design Serial Number
④With Residual Current Protection
⑤Frame Size
⑥Breaking Capacity: L (Standard), M (Medium), H (High)
⑦Operation: None (Manual), Z (Rotary Handle), D (Motorized)
⑧Poles: 3 (3-Pole), 4 (4-Pole)
⑨Trip Type & Accessory Code
⑩Application Code: None (Distribution), 2 (Motor Protection)
⑪4-Pole Code (A/B/C/D for Neutral)
⑫Alarm Module: Ⅰ (Alarm + Trip), Ⅱ (Alarm Only)
Notes:
Frame Size: 1N25 (125A), 2N50 (250A), 4N00 (400A), 6N30 (630A), 8N00 (800A)
Product Display
Earth Leakage Circuit Breaker View 1
Earth Leakage Circuit Breaker View 2
Trip - Opening Method and Accessory Code
Accessory Code Table
Main Parameters and Technical Performances
Model SJKM1LE-125 SJKM1LE-250 SJKM1LE-400 SJKM1LE-630/800
Max Rated Current (A)125250400800
Rated Insulation Voltage Ui (V)AC 800
Rated Working Voltage Ue (V)AC 400
Impulse Withstand Voltage Uimp (V)8000
Arc-Quenching Distance (mm)5050100100
Breaking Capacity Icu (AC400V)35 / 5035 / 5050 / 6550 / 65
Rated Residual Operating Current (mA)30/50/100/300/50030/50/100/300/500100/300/500300/500/1000
Outline and Installation Dimensions

◆ Rear-panel Wiring Dimensions

Rear Panel Wiring

◆ Plug-in Type Rear-panel Wiring

Plug-in Dimensions

◆ Front-panel Wiring Dimensions

Front Panel Wiring
Frequently Asked Questions
What is the main application of the SJKM1LE series?
The SJKM1LE series is a Molded Case Circuit Breaker (MCCB) with residual current protection, primarily used for power distribution and motor protection in AC 400V networks.
What are the available pole configurations?
The series is available in 3-pole and 4-pole configurations to suit different system requirements.
What breaking capacities are available?
It offers three levels of breaking capacity: L (Standard), M (Medium), and H (High), with Icu values reaching up to 65kA at AC400V for larger frames.
Can the residual current operating time be delayed?
Yes, the series includes both non-delay types and delay types (with adjustable settings like 0.35s, 1s, 2s depending on the model) for selective protection.
What are the installation options for these circuit breakers?
They support various installation and wiring methods, including front-panel wiring, rear-panel wiring, and plug-in type configurations.
What is the rated insulation voltage (Ui)?
The rated insulation voltage (Ui) for this series is AC 800V, ensuring high safety and reliability in industrial environments.

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