Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAX121001R1104 — Electronic overload relay
relayPart number: 1SAX121001R1104
The ABB EF19-6.3 (1SAX121001R1104) is a self-supplied, three-pole electronic overload relay for motor overload and phase-failure protection. It has an adjustable current setting of 1.9–6.3 A, selectable 10E, 20E or 30E trip classes, and automatic or manual reset. STOP and TEST functions and status indication are included. Separate short-circuit protection is required.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAX121001R1104 |
| 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 | 1.9–6.3 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC |
| Rated Operational Current (I e ) | 6.3 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 0.008 ... 0.083 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 | Automatic or manual, selectable |
| Operating Ambient Temperature | −25 to +70 °C |
| Terminal Type | Screw terminals |
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 EF19-6.3 cover?
The EF19-6.3, part 1SAX121001R1104, has an adjustable overload current setting range of 1.9 to 6.3 A. Check the motor rated current against this range when selecting the relay.
Does this overload relay require an external power supply?
No separate external supply is needed for the relay itself. It is self-supplied and monitors motor current through built-in current transformers.
Which trip classes and reset modes can be selected?
The relay offers selectable trip classes 10E, 20E and 30E, and either automatic or manual reset. It also provides STOP and TEST functions and a status indication.
Does the EF19-6.3 provide short-circuit protection?
It provides overload and phase-failure protection, but the relay itself must also be protected against short circuits. Select the associated protective device for the installation using ABB’s coordination data.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.