EF1250DU-1250
Product ID:87319
Updated: 2026/7/14
Key Features
- 1Eliminate external power needs with a self-supplied electronic overload relay.
- 2Protect motors reliably against overload and phase failure events.
- 3Achieve precise control via a wide setting range and high accuracy.
- 4Select trip class (10E, 20E, 30E) for customizable motor protection.
- 5Benefit from temperature compensation and dedicated trip/signal contacts.
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Technical Specifications
Detailed engineering parameters
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Product Net Width | 350 mm | Product Net Height | 198 mm |
| Product Net Depth / Length | 425 mm | Product Net Weight | 10 kg |
| Setting Range | 375 ... 1250 A | Rated Operational Voltage | Auxiliary Circuit 600 V Main Circuit 1000 V |
| Rated Operational Current (Ie) | 1250 A | Rated Operational Current AC-3 (Ie) | 1250 |
| Rated Frequency (f) | Main Circuit 60 Hz | Rated Impulse Withstand Voltage (Uimp) | Auxiliary Circuit 6 kV Main Circuit 8 kV |
| Rated Insulation Voltage (Ui) | AC 1000 V Input Circuit / Output Circuit 690 V | Number of Poles | 3P |
| Number of Auxiliary Contacts NC | 1 | Number of Auxiliary Contacts NO | 1 |
| Conventional Free-air Thermal Current (Ith) | Auxiliary Circuit NC 6 A Auxiliary Circuit NO 6 A | Rated Operational Current AC-15 (Ie) | (120 V) NC 3 (120 V) NO 3 A (240 V) NC 3 A (400 V) NC 1.1 (400 V) NO 1.1 A (500 V) NC 0.75 (500 V) NO 0.75 A |
| Rated Operational Current DC-13 (Ie) | (125 V) NC 0.55 A (125 V) NO 0.55 (24 V) NC 1.5 (24 V) NO 1.5 (250 V) NC 0.27 (250 V) NO 0.27 (60 V) NC 0.55 (60 V) NO 0.55 | Degree of Protection | Auxiliary Circuit Terminals IP20 Main Circuit Terminals IP00 |
| Pollution Degree | 3 | Connecting Capacity Auxiliary Circuit | Flexible with Ferrule 1/2x 0.75 ... 2.5 mm² Flexible with Insulated Ferrule 1/2x 0.75 ... 2.5 mm² Flexible 1/2x 0.75 ... 2.5 mm² Rigid 1/2x 1 ... 4 mm² |
| Connecting Capacity Main Circuit | Busbar 80x10 mm² | Tightening Torque | Auxiliary Circuit 0.8 ... 1.2 N·m |
| Wire Stripping Length | 9 mm | Recommended Screw Driver | Auxiliary Circuit Pozidriv 2 |
| Mounting Position | 1 ... 6 | Power Loss | at Rated Operating Conditions per Pole 0.005 W |
| Suitable For | AF1350 AF1650 AF2050 | Standards | IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1, UL 60947-1, UL 60947-4-1 |
| Maximum Operating Voltage UL/CSA | Main Circuit 600 V | Contact Rating UL/CSA | (NC:) B600 (NC:) Q300 (NO:) B600 (NO:) Q300 |
| Connecting Capacity Main Circuit UL/CSA | Busbar 3.15x0.39 in | Connecting Capacity Auxiliary Circuit UL/CSA | Flexible 1/2x 18-10 AWG Stranded 1/2x 18-10 AWG |
| Tightening Torque UL/CSA | Auxiliary Circuit 7 ... 11 in·lb | Ambient Air Temperature | Operation -25 ... +70 °C Operation Compensated -25 ... 70 °C Storage -50 ... +80 °C |
| Ambient Air Temperature Compensation | Yes | Maximum Operating Altitude Permissible | Without Derating 2000 m |
| Resistance to Shock acc. to IEC 60068-2-27 | 11 ms Pulse 15g | Resistance to Vibrations | 3g 3 ... 150 Hz |
| RoHS Status | Following EU Directive 2011/65/EU | ETIM 4 | EC001080 - Electronic overload relay |
| ETIM 5 | EC001080 - Electronic overload relay | ETIM 6 | EC001080 - Electronic overload relay |
| ETIM 7 | EC001080 - Electronic overload relay | ETIM 8 | EC001080 - Electronic overload relay |
| UNSPSC | 39121500 | Manufacturer ID | 1SFA739001R1001 |
Specifications may be subject to change without notice
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