Motor protection circuit breaker

Motor protection circuit breaker. They are used for protecting motors against phase failure, overload, and short circuit. It may also be used for starting and breaking the starter of motor.

Variable speed drives
Water pump control panel
Pressure switch
Pump automation
Float switch - Regulator of level
Motor protection circuit breaker
Cable
Coupling
Level regulator
Pressure control
Condensator
Solenoid valve
Active filters
Boitier de commande et protection pompe de relevage monophasé
Motor protection circuit breaker
Control and protection box for single-phase lift pump
To automate a single-phase lift pump, AT-120 float switch for agitated, clear, waste and loaded water, Schneider box with on/off button, thermal reset, power contactor + thermal protection relay, control by float switch in the tank.
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Boitier de commande et protection pompe de relevage triphasé
2 to 4 days
Motor protection circuit breaker
Control and protection box for three-phase lift pump
£234.42

£234.42 tax excl.

Delivery 2 to 4 days

Control and protection box for a three-phase lift pump from 0.55 Kw to 11.00 Kw, AT-120 float switch for agitated, clear, waste and loaded water, Schneider box with on/off button, thermal reset, power contactor + thermal protection relay, control by float switch in the tank.
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Practical information

Need advice? Our team is available (Monday - Friday: 8:30-12:00 and 13:00-16:30).

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Delivery

  • Same-day dispatch for orders placed before 12 noon, in most cases.
  • Colissimo without signature in mainland France, delivery within 2 to 3 days.
  • Chronopost on request.
  • DB SCHENKER transport for oversized parcels: delivery to your freight forwarder in France, with guaranteed tracking.
Delivery terms

Advice and guides

Go to our guides

Protecting the pump motor against overloads

A pump motor can be damaged by an overload, a stall, a missing phase or a voltage spike. The motor circuit breaker, thermal relay, power contactor and surge protector protect the motor and make starting and stopping easier.

Finding your way

  • Motor circuit breaker: adjustable thermal and magnetic protection.
  • Contactor: power switching, with a coil suited to the control voltage.
  • Thermal relay: monitors the current and cuts out on overload.
  • Surge protection: limits the effect of voltage spikes on the network.

Frequently asked questions: Motor protection

How do I set the thermal protection?

Set it to the rated current on the motor plate, not to the power. The equipment manual explains how to proceed.

What is the difference between a motor breaker and a contactor?

The motor circuit breaker protects the motor, the contactor switches it on. The two are often combined in the same enclosure.

Are these products suited to single-phase and three-phase?

Some models are for single-phase, others for three-phase, with specific current ranges. Check this on the product page before ordering.

Do you need advice before buying?

Our team helps you choose the right equipment for your installation: call +33 3 44 25 91 01 Monday to Friday, 8:30 am to 12:00 pm and 1:00 pm to 4:30 pm (French time), or email contact@pompes-h2o.com. Public bodies can pay by administrative order (mandat administratif), with invoicing through Chorus Pro.