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1SAX121001R1103 — Electronic overload relay
relayPart number: 1SAX121001R1103
The ABB EF19-2.7 (1SAX121001R1103) is a self-supplied, three-pole electronic overload relay for motor overload and phase-loss protection. Its adjustable current setting range is 0.80 to 2.7 A. It offers selectable trip classes 10E, 20E and 30E, manual or automatic reset, and STOP and TEST functions. Separate short-circuit protection is required.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAX121001R1103 |
| 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 | 44.4 mm |
| Product Net Height | 85 mm |
| Product Net Depth / Length | 59.3 mm |
| Product Net Weight | 0.158 kg |
| Setting Range | 0.80–2.7 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC |
| Rated Operational Current (I e ) | 2.7 A |
| Rated Frequency (f) | Auxiliary Circuit 50 Hz |
| Rated Impulse Withstand Voltage (U imp ) | Auxiliary Circuit 6 kV |
| Rated Insulation Voltage (U i ) | 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 6 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 | IP20 |
| Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² |
| Connecting Capacity Main Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 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 0.005 ... 0.058 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 mode | Manual or automatic, selectable |
| Supply | Self-supplied; no external supply required |
| Terminal type | Screw terminals |
| Operating ambient temperature | −25 to +70 °C, temperature compensated |
| Rated operational voltage, main circuit | 690 V AC |
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 EF19-2.7 overload relay cover?
The EF19-2.7, order code 1SAX121001R1103, has an adjustable current setting range of 0.80 to 2.7 A. Check the motor nameplate current and the complete starter design when selecting an overload relay.
Does the EF19-2.7 need a separate power supply?
No. The relay is self-supplied and does not require an additional external supply. It provides motor overload and phase-loss protection; separate short-circuit protection is still required.
Which trip classes and reset modes does the EF19-2.7 offer?
The relay has selectable trip classes 10E, 20E and 30E, with a choice of manual or automatic reset. It also has STOP and TEST functions and a trip indication.
Can the EF19-2.7 be mounted separately from a contactor?
ABB lists a separate mounting kit for the EF19 series as an accessory. Confirm the mounting arrangement and the exact contactor and equipment details before ordering; provide the equipment serial number if fitment is uncertain.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.