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Zhejiang KRIPAL Electric Co., Ltd.
Zhejiang KRIPAL Electric Co., Ltd 27 years experience in manufacturing ac contactor, rotary isolator switch, industrial plug socket, molded case circuit breaker and etc
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Automatic Inverse Time Protective Relays IDMT Overcurrent Protection

Zhejiang KRIPAL Electric Co., Ltd.
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Automatic Inverse Time Protective Relays IDMT Overcurrent Protection

Brand Name : KRIPAL
Model Number : KCR151
Place of Origin : China
MOQ : 10 pcs
Price : negotiable
Payment Terms : T/T, L/C
Supply Ability : 10000 pcs per month
Delivery Time : 20 days and depends on ordering quantity
Packaging Details : Each unit packed in a individual box
Color : White
Current rating : 5A
Frequency : 50/60Hz
Contact : silver alloy
relay : IDMT
Installation : panel,DIN rail , Screws
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Automatic Inverse Time Protective Relays IDMT Overcurrent Protection

Time overcurrent relays operate with a time delay, which is adjustable. For given setting, the actual time delay depends on the current through the relay coil. Higher current will cause a faster operation of the relay. The minimum relay operation current (pick-up current) is also adjustable.

The most commonly used overcurrent relay has both the instantaneous response for very large currents and the inverse time response for lower currents. A relay is intended protect loads or circuits from excessive current.


KRIPAL overcurrent protection delivers comprehensive protection schemes for low voltage applications. All Mikro's overcurrent units are microprocessor-based numerical relays and are housed in high-strength protective casing. The models in the range provide a wealth of options including programmable relay outputs to static, and digital display or dial activated..


A. Low-set inverse definite minimum time relay
B. High-set instantaneous
C. Separate low-set and high-set trip indicators
D. Trip starting indication



Current rating


Rated frequency



< 0.3VA at In

Thermal withstand


Auxiliary supply





Low-set: 2A to 6A; 40% to 120%
Time multiplier: 0.01 to 1.0
IDMT curve: Normal inverse
High-set(l>>): i> to 5× l>

Trip contact: Automatic reset type
Contact rating: NC NO contact type
6A. 250V AC
Silver alloy contact material
100, 000 electrical operations at rated currents

Trip indicator: Manual reset type

Adjustable accuracy: Less than ± 5%
Repeatability: Less than 0.5% of full scale


  • Accurate, reliable and more resistant to vibration and shock than traditional electromechanical relays
  • Current measurement based on fundamental frequency, prevents nuisance tripping
  • Digital display or dial activated for ease of use
  • Robust casing protects the unit from external interference
  • Complies with IEC 60255-26 standards


Feeder incoming protection
Outgoing protection
Busbar protection

Full series: earth leakage relay, earth fault relay, overcurrent relay, zero phase transformer

Product Tags:

Overcurrent Protection Relay


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Automatic Inverse Time Protective Relays IDMT Overcurrent Protection Images

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