Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAX611001R1101 — Electronic overload relay
relayPart number: 1SAX611001R1101
ABB 1SAX611001R1101 is the EF370-380 three-pole electronic overload relay, with an adjustable current setting of 115–380 A. Self-supplied, it provides motor overload and phase-failure protection. It offers selectable 10E, 20E and 30E trip classes, manual or automatic reset, one normally closed trip contact and one normally open signal contact.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAX611001R1101 |
| 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 | 187.6 mm |
| Product Net Depth / Length | 122.8 mm |
| Product Net Weight | 1.338 kg |
| Setting Range | 115–380 A |
| Rated Operational Voltage | Main circuit: 1000 V AC (IEC/EN); auxiliary circuit: 600 V AC/DC |
| Rated Operational Current (I e ) | 380 A |
| Rated Frequency (f) | Main circuit: 50/60 Hz; auxiliary circuit: DC, 50/60 Hz |
| Rated Impulse Withstand Voltage (U imp ) | Main circuit: 8 kV; auxiliary circuit: 6 kV |
| Rated Insulation Voltage (U i ) | Main circuit: 1000 V; auxiliary circuit: 690 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 > 10 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 0.37 ... 4.043 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 |
| Supply | Self-supplied; no external supply required |
| Protection Functions | Motor overload and phase failure |
| Ambient Air Temperature | Operation: -25 to +70 °C; storage: -50 to +85 °C |
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 EF370-380 cover?
ABB identifies 1SAX611001R1101 as the EF370-380, with an adjustable current setting range of 115–380 A. Check the motor nameplate and application requirements before selecting the relay.
Does the EF370-380 need a separate power supply?
No separate external supply is needed for the relay: ABB describes it as self-supplied. It protects motors against overload and phase failure.
Which trip classes and reset options are available on the EF370-380?
Trip classes 10E, 20E and 30E are selectable, as are manual and automatic reset. The relay also has STOP and TEST functions and a trip indication.
What are the EF370-380 main and auxiliary circuit voltage ratings?
ABB lists the main circuit at 1000 V AC under IEC/EN characteristics and 600 V AC maximum under UL/CSA. The auxiliary circuit operational voltage is 600 V AC/DC. The ratings apply to different circuits and must not be confused with a required external relay supply.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.