Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory
Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory
Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory
Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory
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Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory
Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory
Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory
Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory

Wholesale SJKM3E Electronic Circuit Breaker (ECB) with Smart Protection Suppliers, Factory

The SJKM3E Electronic Circuit Breaker (ECB) delivers advanced circuit protection for 16A-800A loads at 400V/800V AC (50/60Hz) in 3P/4P configurations. This industrial-grade ECB meets IEC60947-2/GB14048.2 standards, featuring 8kV impulse withstand and reliable isolation with visible "OFF" position indication. Designed for harsh environments, it operates at 2000m altitude (with derating) and withstands Pollution Degree III conditions with IP20/IP40 protection. The SJKM3E ECB ensures stable performance in +40°C/50% humidity (90% monthly max), making it ideal for power distribution systems requiring precision protection and isolation safety.

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Product Description

Type Designation

SJKM3E ECB
①Product Type
②Molded Case Circuit Breaker (MCCB) Designation
③Design Code
④Release Type
⑤Frame Current Rating (A)
⑥Breaking Capacity Class
⑦Operation Mode
⑧Number of Poles
⑨Accessory Code

Release Mechanism Type and Internal Accessory Code

♦ Release Characteristics

With protection functions including overload long-time inverse time delay, short-circuit time delay inverse limit, short-circuit short-time delay fixed time limit, and short-circuit instantaneous action, users can set the required protection characteristics themselves. The neutral line overcurrent protection current and time parameters automatically track 100% of the phase line setting values. The release characteristics are shown in the following diagram.

SJKM3E-3
SJKM3E-4
口 Alarm Contact (NC)
■ Auxiliary Contact (NO+NC)
● Shunt Release
○ Undervoltage Release
→ Wiring Direction
SJKM3E-5

Product Display

SJKM3E Earth Leakage Circuit Breaker (1)
SJKM3E Earth Leakage Circuit Breaker (3)
SJKM3E Earth Leakage Circuit Breaker (2)
SJKM3E Earth Leakage Circuit Breaker (4)

SJKM3E Series Front Panel Wiring

◆ SJKM3E-125 (L,M,H) Front Panel Wiring (2-pole, 3-pole, 4-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-6
◆ SJKM3E-125 (L,M,H) Insert Type Front Panel Wiring (3-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-7
◆ SJKM3E-250 (L,M,H) Front Panel Wiring (3-pole, 4-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-8
◆ SJKM3E-250 (L,M,H) Insert Type Front Panel Wiring (3-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-9
◆ SJKM3E-400 (L,M,H) Front Panel Wiring (3-pole, 4-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-10
◆ SJKM3E-400 (L,M,H) Insert Type Front Panel Wiring (3-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-11
◆ SJKM3E-630,800 (L,M,H) Front Panel Wiring (3-pole, 4-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-12
◆ SJKM3E-630,800 (L,M,H) Insert Type Front Panel Wiring (3-pole) X-X, Y-Y are the centers of 3-pole circuit breaker
SJKM3E-13

Frequently Asked Questions

What protection functions does the SJKM3E series provide?
The SJKM3E series provides comprehensive protection including overload long-time inverse time delay, short-circuit time delay inverse limit, short-circuit short-time delay fixed time limit, and short-circuit instantaneous action.
Can users customize the protection parameters?
Yes, users can set the required protection characteristics independently. Furthermore, the neutral line overcurrent protection parameters automatically track 100% of the phase line settings.
What are the available frame current ratings for this series?
The series covers multiple frame ratings including SJKM3E-125, SJKM3E-250, SJKM3E-400, and SJKM3E-630/800 models to accommodate different electrical system demands.
What types of internal accessories are compatible with the SJKM3E?
The breaker supports multiple internal accessories including Alarm Contacts (NC), Auxiliary Contacts (NO+NC), Shunt Releases, and Undervoltage Releases.
What installation and wiring configurations are available?
The models support standard front panel wiring as well as insert-type front panel wiring, supporting 2-pole, 3-pole, and 4-pole configurations depending on the specific frame model.

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