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Ceramic square tube fuse, 250A, 690V/660V, fast blow

OEM Industries

OEM Industries RS32 250A aR 690V/660V ceramic square tube fast blow fuse

SKU CH-YQTR-RE764

Ceramic square-tube fast-blow fuse rated 250 A at 690 V/660 V for circuit protection

  • Amperage250
  • Product typeCircuit Protectors
  • 250 A rating protects high-power circuits
  • Fast-blow action limits fault energy quickly
  • Ceramic square tube body withstands thermal stress
  • 690 V AC / 660 V AC rated voltage
  • RS32 series aR semiconductor protection class

RS32 250A aR fuse for circuit protection

This RS32 250A aR fuse provides fast-blow circuit protection in a ceramic square tube body. It is rated for 250 amps and a dual voltage of 690V/660V. The component suits industrial power systems and generator installations that require reliable overcurrent interruption. Electrical engineers and maintenance teams specify it for critical line safety.

Ceramic body handles high thermal stress

The ceramic square tube construction withstands the intense heat generated during a fast-blow fault event. This material choice maintains structural integrity when the 250 amp element melts to clear the short circuit. The design supports stable operation at the rated 690V/660V without degradation. Noise and power draw are not applicable to this passive safety device.

Replaces blown RS32 250A aR fuses in existing

This fuse serves as a direct replacement for a spent RS32 250A aR unit in compatible fuse blocks. The upgrade is necessary immediately after a fault event has opened the original element. It is not intended for circuits requiring a different ampere rating, voltage class, or time-delay characteristic. Buyers needing a slower blow profile or higher interrupting capacity must select a different series.

How it compares

Measured against everything we stock in Breakers & Circuit Protection, at today’s prices. Recalculated every night.

Price $64.99
Pricier than about 57% of the 1,135 comparable items (median $54.99).

Specifications

Product
Product lineRS32 250A aR
Model nameRS32 250A aR
Product typeCircuit Protectors
Power
Amperage250

Questions about this item

How do I install the RS32 250A aR ceramic square tube fuse and what step is often missed?

Insert the fuse squarely into its holder until the end caps seat fully; the step often missed is verifying both caps make firm, even contact so the 250 A rating holds.

What maintenance or replacement will the RS32 250A aR fuse need later?

The fuse is a single-use device; after it interrupts a fault at 690 V/660 V it must be replaced with an identical RS32 250A aR unit.

What limit appears first when the RS32 250A aR fuse runs under sustained load?

Continuous current must not exceed 250 A; exceeding this ampere rating causes the element to melt and open the circuit.

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