Products Categories

SM6 Modular Air Insulated Medium Voltage Ring Main Unit (RMU)

RM6 Fully Enclosed and Fully Insulated Gas-Insulated Ring Network Switchgear

KYN28-12 Withdrawable Armored Metal-Enclosed Switchgear

KYN61-40.5 Armoured Moving Type AC Metal Enclosed Switchgear

KYN28-24 Withdrawable Armored Metal-Enclosed Switchgear – Low Current Industrial Grade

SafeRing-12 Fully insulated inflatable ring switchgear with Insulation Protection

SafeRing-40.5 Gas Insulated Ring Main Unit (RMU) -SF6 Sealed Switchgear

GXGN-12 Solid-Insulated Fully Enclosed Ring Main Unit Switchgear

HBXGN-12(F) Environment-friendly gas insulated metal enclosed switchgear

DFW Outdoor High Voltage Cable Branch Box (Cabinet)

Intelligent Universal Circuit Breaker SJKW1-2000 from China Suppliers and Factory for Reliable Power Protection

This Air Circuit Breaker, designed specifically for 50Hz AC distribution networks operating at voltages up to 690V and current ratings from 200A to 6300A, ensures comprehensive protection against overloads, short circuits, undervoltage conditions, and ground faults. As a leading product from China, this circuit breaker features intelligent selective protection that significantly enhances power reliability. Additionally, its open communication interfaces allow for seamless integration and remote control in automation systems. With a rating suitable for altitudes ≤2000m and an impressive 8kV impulse withstand voltage, this device can also serve as an isolator without the need for controllers. This product represents the perfect blend of precise protection and smart grid compatibility, making it an ideal choice for suppliers and manufacturers seeking reliable solutions in electrical distribution.

Product Details

Type Designation

SJKW1-2000-intelligent-universal-circuit-breaker

① Rated current in scope of frame size
1600 type	200A, 400A, 630A, 800A, 1000A, 1250A, 1600A
2000 type	630A, 800A, 1000A, 1250A, 1600A, 2000A
3200 type	2000A, 2500A, 3200A
4000 type	2500A, 3200A, 4000A
6300 type	4000A, 5000A, 6300A

Number of poles: 3-default; 4-4 pole

Installation:
Fixed type - horizontal, vertical
Drawout type - horizontal, vertical

Intelligent controller:
M type: 2M (digital display), 3M (LCD display). Over-current protection (overload, short delay, instantaneous), 4P/3P+N earthing protection.
H type: 2H (digital), 3H (LCD). Includes communication function and full over-current/earthing protection.

Common use accessory:
Shunt release, Undervoltage release, Closing electromagnet, Motor-driven energy-storage mechanism (AC220V/230V, AC380V/400V, DC220V, DC110V).
Auxiliary contact: 4a4b, 2a6b, 3a3b (a-normal open, b-normal close).

Optional accessory:
Mechanical interlock (1 lock+1 key, steel cable/rod interlock for 2-3 breakers), Automatic power transfer system, Current transformer with neutral lead.

Product Display

SJKW1-2000-intelligent-universal-circuit-breaker-1

SJKW1-2000-intelligent-universal-circuit-breaker-2

W1-ACB-intelligent-universal-circuit-breaker-4

SJKW1-2000-intelligent-universal-circuit-breaker-4

SJKW1-2000-intelligent-universal-circuit-breaker-5

Technical Parameters

Rated current (Inm)	1600	2000	3200	4000	6300
Ue (V)	AC400V/690V	AC400V/690V	AC400V/690V	AC400V/690V	AC400V/690V
Ui (V)	1000	1000	1000	1000	1000
Frequency (HZ)	50HZ	50HZ	50HZ	50HZ	50HZ
Icu (kA) 400V	65	85	100	100	120
Icu (kA) 690V	50	50	65	65	80
Ics (kA) 400V	55	50	65	65	80
Ics (kA) 690V	42	40	50	50	70

Installation and Overall Dimensions

Frequently Asked Questions

1. What are the available frame sizes for the SJKW1 series?

The SJKW1 series is available in five frame sizes: 1600, 2000, 3200, 4000, and 6300, covering rated currents from 200A up to 6300A.

2. What is the difference between M-type and H-type intelligent controllers?

M-type controllers provide standard protection (overload, short delay, instantaneous). H-type controllers include all M-type features plus advanced communication functions for remote monitoring.

3. Can the SJKW1 circuit breaker be installed in different orientations?

Yes, both Fixed and Drawout types support both horizontal and vertical installation to suit various switchgear configurations.

4. Does the breaker support 4-pole configurations?

Yes, the SJKW1 series is available in both 3-pole (default) and 4-pole versions, with earthing protection available for 4P and 3P+N setups.

5. What is the maximum breaking capacity (Icu) of this series?

The maximum ultimate short-circuit breaking capacity (Icu) reaches up to 120kA at AC400V for the 6300 frame size.

6. Are mechanical interlocks available for multiple breakers?

Yes, optional mechanical interlocks can be configured for two breakers (steel cable or rod) or three breakers (3-lock 2-key or rod interlock) to ensure safe operation.