Technical illustration. Representative component image; exact configuration and appearance may vary. Images are for reference only. The supplied part’s appearance may differ.
1SAX221001R1101 — Electronic overload relay
relayPart number: 1SAX221001R1101
ABB 1SAX221001R1101 is the EF45-30 self-supplied electronic overload relay. It has a 9–30 A adjustable current range and protects motors against overload and phase failure. Features include selectable 10E, 20E and 30E trip classes, manual or automatic reset, and one normally open and one normally closed auxiliary contact.
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Technical specifications
| Manufacturer | ABB |
|---|---|
| Part number | 1SAX221001R1101 |
| 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 | 45 mm |
| Product Net Height | 104.7 mm |
| Product Net Depth / Length | 86 mm |
| Product Net Weight | 0.362 kg |
| Setting Range | 9–30 A |
| Rated Operational Voltage | Auxiliary Circuit 600 V AC/DC |
| Rated Operational Current (I e ) | 30 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 2.5 ... 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 0.021 ... 0.234 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 |
| Auxiliary Contacts | 1 normally open and 1 normally closed |
| Main Circuit Connection | Screw terminals |
| Mounting | Direct attachment |
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 ABB 1SAX221001R1101 cover?
ABB 1SAX221001R1101 is the EF45-30 electronic overload relay, with an adjustable current range of 9–30 A. Check the motor nameplate and protection requirements when selecting the relay.
Does the EF45-30 require a separate power supply?
No separate external supply is required: the EF45-30 is a self-supplied electronic overload relay. It provides motor protection against overload and phase failure.
Which trip classes and reset modes are available on the EF45-30?
The relay has selectable trip classes 10E, 20E and 30E, and can be set for manual or automatic reset. It also has stop and test functions and a trip indication.
Can the EF45-30 mount directly to an ABB contactor?
The EF45-30 is intended for direct mounting, and AF26 to AF38 contactors are listed as suitable. Before ordering, confirm the exact contactor designation and equipment details; provide the equipment serial number where applicable.
Researched on:
Research information may be outdated. Confirm fitment and specifications with our team before ordering.