Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAX121001R1102 — Electronic overload relay
relayPart number: 1SAX121001R1102
ABB EF19-1.0 (1SAX121001R1102) is a self-supplied electronic motor overload relay with a 0.30–1.0 A adjustable current range. It provides overload and phase-failure protection, selectable trip classes and manual or automatic reset. It includes one normally closed trip contact, one normally open signal contact, STOP and TEST functions, and trip indication.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAX121001R1102 |
| 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 | 0.30–1.0 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC |
| Rated Operational Current (I e ) | 1 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 | 3P |
| 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 ... 0.054 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 |
| Auxiliary Contacts | 1 normally closed trip contact; 1 normally open signal contact |
| Power Supply | Self-supplied; no separate external supply required |
| Main Circuit Connection | Screw connection |
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 EF19-1.0 cover?
ABB 1SAX121001R1102, also identified as EF19-1.0, has an adjustable overload-current range of 0.30–1.0 A. Check the motor nameplate current and the starter design when selecting a relay.
Does the EF19-1.0 need an external power supply?
No separate external supply is required for the relay: the EF19-1.0 is self-supplied. It provides motor overload and phase-failure protection.
Which trip classes and reset modes does the EF19-1.0 offer?
The electronic overload relay has selectable trip classes 10E, 20E and 30E, and a choice of manual or automatic reset. The appropriate choices depend on the motor and starter design.
What auxiliary contacts and controls does this relay have?
It has one normally closed trip contact and one normally open signal contact, along with STOP and TEST functions and a trip indication.
Can the EF19-1.0 be mounted directly to a contactor?
The relay is designed for direct contactor mounting, and a single-mounting kit is available as an accessory. Confirm the exact contactor model and equipment serial number before ordering; a direct fit for a particular installation is not established here.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.