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1SAX531001R1101 — Electronic overload relay
relayPart number: 1SAX531001R1101
ABB EF205-210 (1SAX531001R1101) is a self-supplied electronic motor overload relay with a 63–210 A adjustable current range. It provides overload and phase-failure protection, selectable trip classes 10E, 20E and 30E, and manual or automatic reset. It includes one normally closed trip contact, one normally open signal contact, and stop, test and trip indication functions.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAX531001R1101 |
| Category | Electrical & controls |
| Ex Operating Instructions | ATEX - Operating instructions for EF electronic overload relay for potentially explosive areas |
| Time-Current Characteristic Curve | Tripping characteristic - Electronic overload relay EF19, EF45, EF65, EF96, EF146, EF205, EF370, EF460, EF750 from cold state |
| Product Net Width | 105 mm |
| Product Net Height | 171 mm |
| Product Net Depth / Length | 122.8 mm |
| Product Net Weight | 1.256 kg |
| Setting Range | 63–210 A |
| Rated Operational Voltage | Main circuit: 1000 V AC; auxiliary circuit: 600 V AC/DC |
| Rated Operational Current (I e ) | 210 A |
| Rated Frequency (f) | Main circuit: 50/60 Hz; auxiliary circuit: DC or 50/60 Hz |
| Rated Impulse Withstand Voltage (U imp ) | Auxiliary Circuit 6 kV |
| Rated Insulation Voltage (U i ) | 1000 V |
| Number of Poles | 3 |
| Number of Auxiliary Contacts NC | 1 |
| Number of Auxiliary Contacts NO | 1 |
| Number of Protected Poles | 3 |
| Conventional Free-air Thermal Current (I th ) | Auxiliary Circuit NC 5 A |
| Rated Operational Current AC-15 (I e ) | (240 V) NC 3 A |
| Rated Operational Current DC-13 (I e ) | (125 V) NC 0.55 A |
| Degree of Protection | Housing IP20; main circuit terminals IP00 |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Connecting Capacity Main Circuit | Hole Diameter > 8 mm² |
| Tightening Torque | Auxiliary Circuit 0.8 ... 1.2 N·m |
| Wire Stripping Length | Auxiliary Circuit 9 mm |
| Mounting Position | 1 ... 6 |
| Power Loss | at Rated Operating Conditions per Pole 0.107 ... 1.191 W |
| Maximum Operating Voltage UL/CSA | Main Circuit 600 V AC |
| Contact Rating UL/CSA | (NC:) B600 |
| Published component type | Electronic overload relay |
| Reference status | Published part reference; specification and fitment require confirmation |
| Availability | On request |
| Trip Class | 10E, 20E or 30E, selectable |
| Reset | Manual or automatic, selectable |
| Ambient Operating Temperature | −25 to +70 °C, temperature compensated |
Catalogue information may contain errors or be out of date. Full specifications and verified details are available on request. Confirm the part number and equipment fitment with us before ordering.
Product questions
What current range does the ABB EF205-210 overload relay cover?
The EF205-210, part number 1SAX531001R1101, has an adjustable overload current setting range of 63–210 A. Check the motor nameplate current and application requirements before selecting it.
Does the EF205-210 need a separate power supply?
No. The EF205-210 is self-supplied and does not require an additional external supply for the relay.
Which trip classes and reset options does the EF205-210 provide?
Trip classes 10E, 20E and 30E are selectable. The relay also offers selectable manual or automatic reset, plus stop, test and trip indication functions.
What motor faults does the EF205-210 protect against?
It provides motor protection against overload and phase failure. Its overload function should not be treated as a substitute for properly coordinated short-circuit protection.
What auxiliary contacts are included on the EF205-210?
It has one normally closed trip contact and one normally open signalling contact. Confirm that the contact ratings suit the control circuit.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.