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CNC Electric Group Co., Ltd.

Soft Starter, Mining Explosion-Proof, Starter manufacturer / supplier in China, offering Qjr-400 (315, 250) /1140 (660, 380) Z Mining Explosion-Proof Soft Starter, Drop out Fuse (PRW1-24), Double-Winding Non-Excitation Tap-Changing Oil Immersed Distribution Transformer of 6~10V and so on.

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Supplier Homepage Product Mining Explosion proof product Mine EX Starter Qjr-400 (315, 250) /1140 (660, 380) Z Mining Explosion-Proof Soft Starter

Qjr-400 (315, 250) /1140 (660, 380) Z Mining Explosion-Proof Soft Starter

FOB Price: Get Latest Price
Min. Order: 20 Pieces
Production Capacity: 10, 000 PCS/Day
Transport Package: Standard Export Packing
Payment Terms: L/C, T/T, Western Union

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Basic Info
  • Model NO.: QJR-400
  • Origin: China
  • Trademark: CNC
Product Description

QJR-400(315, 250)/1140(660, 380)Z mining explosion-proof and intrinsically safe type AC soft/direct starter is applicable in AC 50Hz distribution system with rated voltage of 1140V, 660V or 380V and rated current of 400A in underground coal mines. With explosive and dangerous gas(methane) and coal dust, it is used to control the direct start and stop, soft starter and stop of three-phase squirrel-cage asynchronous motor in local or remote distance. It is a ideal new generation to replace traditional star-delta starter and auto-transformer starter.


1. Liquid crystal Chinese display for each parameter with simple and straightforward setting and operation

2. The core adopts advanced totally digital transmission controller of 16 digits single chip

3. Currrent-limiting start, voltage-ramp start, torque control, torque accelerated jumping start and other start modes

4. Self-check protective function of short circuit, loss of phase, leakage lockout, over voltage, over current, etc.

5. High performance of reliability and anti-interference with very high voltage adaptability and high anti-interference ability of power supply.
  Rated voltage (V) 1140, 660, 380 
  Rated current(A) 400, 315, 250 
  Frequency(Hz) 50 
  Max. time of current overload it' s adjustable under 6 times 
  Start times(s)   adjustable (max. 60)
  Star acceleration (m/s² )   adjustable (max. 60)
  Cooling mode natural cooling
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