ABB
Thermal overload relays
Motor protection; no generic 4P option
Choose the setting band and mounting combination from the selected relay series.
Manufacturer data & documents ↗COMPONENT FAMILIES / Motor protection & control
Motor overload relays
Adjustable motor overload protection, grouped into one family. Thermal and electronic series cover different current bands and starting duties.
- Range / configuration
- 0.1–630 A across thermal & electronic ranges
- Catalogue brands
- ABB · LOVATO · Schneider Electric · CHINT
APPLICATION GUIDE
Motor overload protection
Overload protection responds to motor operating conditions and is coordinated with short-circuit protection. The relay setting band, trip class and reset method must suit the motor duty. A matching ampere range alone does not establish mounting compatibility.
Typical applications: Motor starters for pumps, fans, compressors and production machinery.
SELECTION AT A GLANCE
Range / configuration
0.1–630 A across thermal & electronic ranges
- Thermal overload relays
- electronic protection relays
- direct or separate mounting
Schneider thermal options cover 0.1–150 A; electronic options extend to 630 A. LOVATO thermal series extend to 420 A. Brand ranges and mounting compatibility differ.
Manufacturer families & published data
Compare the named series against your requirement. These are catalogue references; stock and lead times are confirmed on enquiry. Similar headline ratings do not establish an interchangeable replacement.
Schneider Electric
TeSys overload relays
Thermal and electronic families
Thermal options cover 0.1–150 A; electronic protection families extend to 630 A.
Manufacturer data & documents ↗LOVATO
RF motor protection relays
Thermal relay families
Direct or independent mounting depends on the relay and contactor combination.
Manufacturer data & documents ↗CHINT
NXR thermal overload relays
Three-phase motor protection
Setting bands across the family cover 0.1–630 A; select the exact band and compatible mounting.
Manufacturer data & documents ↗Manufacturer references reviewed 2026-09-25. Images identify the manufacturer stated in their captions.
Information for your component enquiry
Send the following information so the family can be narrowed to a suitable series. For an existing installation, include the full device reference and clear photographs of the nameplate and connections.
- Motor full-load current
- start duration and starts per hour
- contactor series and reset requirements
Key selection checks: Motor current; trip class; reset strategy.
Discuss motor overload relays ↗Common questions
Does the listed range mean every option is in stock?
No. The range describes selected catalogue families. NPE confirms the exact series, configuration, stock and lead time against your enquiry.
Can I replace a component using its headline rating alone?
No. Check the full electrical duty, physical fit, interfaces and supported accessories. Send the installed reference so the intended function can be compared against the proposed component.
Related component families
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Manufacturer images identify the stated family or model. Other equipment illustrations are labelled separately. Confirm specifications and availability before ordering.