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Transparent rectangular Schneider Electric LUCB32B overload module with wire leads

Schneider Electric

Schneider Electric LUCB32B Overload Module 8-32A 3P Class 10 24VAC

SKU CH-571Q-H4F48

Protects motors from 8 to 32 amps with a Class 10 trip curve and 24 V AC control voltage

  • Product typeIndustrial Electrical Controls & Automation
  • Overall length4
  • Product colorTransparent
  • Product weight0.3
  • Adjustable motor protection 8–32 A with manual reset
  • Trip Class 10 response limits thermal stress on windings
  • 24 V AC coil integrates with TeSys Ultra starters
  • Certified to IEC 60947-6-2, CE, UL, CSA and ATEX
  • Compact 4.000 mm transparent housing weighs .3 kg

Motor-current protection

The Schneider Electric LUCB32B overload module provides adjustable motor-current protection from 8 A to 32 A for three-phase circuits. It operates on a 24 V AC coil and is designed for use with TeSys Ultra starters. Trip Class 10 response and manual reset suit standard industrial motor-starting duties.

Standards and wiring

The module carries ASEFA, ATEX, CCC, CE, CSA, CSA C22.2, EAC, IEC 60947-6-2 and UL listings plus Green Premium RoHS/REACH compliance. Wire-lead terminals simplify panel wiring. A maximum voltage rating of 690 V AC covers common industrial supply levels.

Installation checks

Verify that the motor full-load current falls within the 8 A to 32 A adjustment range. Confirm the control circuit supplies 24 V AC and that the starter is a TeSys Ultra model. Ensure the enclosure can accommodate the 4.000 length dimension and that the 158 °F maximum operating temperature is not exceeded.

How it compares

Measured against everything we stock in AV Accessories & Components, at today’s prices. Recalculated every night.

Price $149.99
Pricier than about 82% of the 3,838 comparable items (median $41.99).

Specifications

Product
Brand nameSchneider Electric
Model nameLUCB32B
Product typeIndustrial Electrical Controls & Automation
Product colorTransparent

Questions about this item

Will the 8-32 A adjustment range need recalibration after extended operation?

The overload module is factory calibrated across the 8-32 A range and does not require periodic recalibration; replacement is only needed if the unit trips repeatedly or shows physical damage.

What limit appears first when the LUCB32B runs continuously at 32 A?

The maximum operating temperature of 158 °F is the first sustained-use limit; exceeding it can cause premature tripping or permanent damage to the trip mechanism.

How much heat does the module generate when powered at 24 V AC all day?

Power dissipation is low because the coil draws only the 24 V AC control voltage; the unit stays well below its 158 °F limit in a ventilated enclosure under normal load.

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