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EATON HJW Series Complete Molded Case Circuit Breakers, J Frame

Eaton circuit breakers (HJW Series) offer protection by cutting off electrical supply during short-circuit & overload occurrences. They are used in renewable energy systems, motor control centres and power distribution systems.

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EATON HJW3125A
EATON HJW3125VB
StyleModelMPNPrice
A
HJW3125		HJW3125£11,981.36
B
HJW3125V		HJW3125V£11,981.36
B
HJW3125VD14X		HJW3125VD14X£10,892.16
B
HJW3160		HJW3160£11,981.36
B
HJW3160V		HJW3160V£11,981.36
B
HJW3160VD14X		HJW3160VD14X£10,892.16
A
HJW3200		HJW3200-
RFQ
B
HJW3200V		HJW3200V£11,981.36
B
HJW3200VD14X		HJW3200VD14X£10,892.16
B
HJW3250		HJW3250-
RFQ
B
HJW3250D17		HJW3250D17£10,146.71
B
HJW3250V		HJW3250V-
RFQ
B
HJW3250VD14X		HJW3250VD14X-
RFQ
B
HJW4125		HJW4125-
RFQ
B
HJW4125V		HJW4125V-
RFQ
B
HJW4160V		HJW4160V-
RFQ
B
HJW4200V		HJW4200V£11,951.87
B
HJW4250		HJW4250-
RFQ
B
HJW4250V		HJW4250V-
RFQ

Features

  • These circuit breakers feature a thermal-magnetic trip unit that provides both time-delayed and instantaneous protection.
  • Eaton HJW Series complete MCCBs have an J frame for protecting electrical devices from overcurrents and short circuits.
  • These MCCBs have an interrupt capacity of 70kAIC at 600VAC.
  • They feature fixed thermal / fixed magnetic trips for quick response time & overcurrent protection.
  • These Eaton HJW series moulded case circuit breakers have a 4 pole configuration to provide a standard current flow up to 250A.
  • Selected models have line and load end caps for improved safety and easy installations.

Standards and Approvals

  • UL

Frequently Asked Questions

What is the difference between MCCBs and MCBs?

  • MCCBs safeguard equipment from fault currents & excess temperature rise, while MCBs protect items against current overloads.
  • MCBs retain comparatively low interrupting ratings as compared to MCCBs.
  • The tripping circuit of MCBs are fixed, while MCCBs have a movable tripping circuit.

Does temperature affect moulded case circuit breakers?

Extreme heat can cause circuit breakers to trip, even without an overload, as the bimetallic strip inside flexes and contacts to activate the breaker.

How are circuit breakers better than fuses?

  • Circuit breakers can be easily reset and reused after tripping, while fuses cannot be reused if blown once.
  • Circuit breakers offer precise protection by tripping at specific current thresholds, whereas fuses may have varying trip characteristics, making it difficult to find the exact fuse rating for a circuit.
  • Circuit breakers often include ground fault protection (GFCI) and arc fault detection (AFCI), enhancing safety against electrical shocks and fire hazards. Fuses lack these built-in sensing capabilities.

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