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ABB ef65-70 electronic overload relay 65a - 70a
MPN: 1SAX331001R1101
Alt. SKU: EF65-70
Special Price
£188.23
£156.86
Regular Price
£289.58
Why Choose the EF65-70 [1SAX331001R1101]
The EF65 is a self-powered electronic overload relay requiring no external supply, providing precise and rapid motor protection against overload and phase failure. Designed for straightforward installation and operation similar to thermal overload relays, it is fully compatible with standard motor control applications. Key technical advantages include a broad current setting range, high measurement accuracy, extended operating temperature tolerance, and selectable trip classes (10E, 20E, 30E) to suit specific motor protection requirements. Additional features comprise temperature compensation, normally closed trip and normally open signal contacts, selectable automatic or manual reset, a trip-free mechanism, STOP and test functions, plus clear trip indication. The relay mounts directly onto contactors, with single mounting kits available as accessories. The EF65 series, along with EF96 and EF146 models, holds ATEX and IECEx certification, ensuring suitability for use in hazardous environments (ATEX certification applies from week 42, 2014; IECEx from week 15, 2017).
Technical Specification
- Function: Self-supplied electronic overload relay for motor protection against overload and phase failure.
- Setting Range: 25 to 70 A rated operational current.
- Rated Operational Voltage: Auxiliary circuit up to 600 V AC/DC, main circuit up to 1000 V AC.
- Contact Configuration: 3 poles with 1 normally closed (NC) trip contact and 1 normally open (NO) signal contact.
- Insulation and Impulse Ratings: Rated insulation voltage 1000 V; impulse withstand voltage 6 kV auxiliary, 8 kV main circuit.
- Degree of Protection: Housing IP20, main circuit terminals IP10.
- Terminal Type and Size Range: Main circuit terminals accept flexible or rigid cables from 4 to 35 mm²; auxiliary circuit 0.75 to 4 mm².
- Tightening Torque: Auxiliary circuit 0.8–1.2 N·m, main circuit 4 N·m.
- Mounting Compatibility: Suitable for AF40, AF52 and AF65 contactors.
Trusted By Customers Worldwide
"Specified by UK panel builders for dependable control." Controls Engineer, UK
Frequently Asked Questions
What is the function of the EF65 overload relay?
The EF65 is a self-supplied electronic overload relay designed to protect motors against overload and phase failure.
What is the setting range for the EF65?
The setting range for the EF65 is 25 to 70 A rated operational current.
What types of contactors is the EF65 compatible with?
The EF65 is suitable for use with AF40, AF52, and AF65 contactors.
What is the cable capacity for the main circuit terminals?
The main circuit terminals accept flexible or rigid cables from 4 to 35 mm².
What are the degrees of protection for the EF65?
The housing has an IP20 rating, while the main circuit terminals have an IP10 rating.
Does the EF65 have any certifications?
Yes, the EF65 has ATEX and IECEx certification for products produced from specified weeks in 2014 and 2017 respectively.
What should I refer to for standards and approvals?
See the manufacturer's data sheet for standards and approvals.
| Manufacturer Part Number | 1SAX331001R1101 |
|---|---|
| Amp Range | 65A - 70A |
| Manufacturer | ABB |
| Alternative Product SKU | EF65-70 |
| Barcode | 4013614442254 |
| Product Lead Time | Please contact us for a delivery time |
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