Elmeasure · Contactors & switches
Elmeasure EMN Thermal Overload Relay
Price on enquiry
Thermal overload relays that protect motors against overload and single phasing, mounted directly on E3MX contactors.
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Key features
- Ranges from 1.4 A to 110 A
- Ambient temperature compensated up to 55°C
- In-built single phase missing protection
- Manual / auto reset provision
- Built-in contacts 2 NO + 1 NC with on/off/trip indication
- Conforms to IS/IEC 60947-4-1 and IEC 60947-4-1
Applications
- Motor protection in motor starter combinations
Technical specifications
| Standards | IS/IEC 60947-4-1, IEC 60947-4-1 |
|---|---|
| Models | EMN 40 (1.4–40 A), EMN 110 (9–110 A) |
| Mounting | Direct / separate |
| Suitable contactors, EMN 40 | E3MX 9, 12, 18, 22, 25, 32, 40 |
| Suitable contactors, EMN 110 | E3MX 50, 70, 80, 90, 110 |
| Rated insulation voltage Ui | 690 V |
| Rated impulse voltage Uimp | 6 kV |
| Trip class | 10 A |
| Service temperature | -5°C to +55°C |
| Max. frequency of operations | 30 cycles/hr |
| Built-in contacts | 2 NO + 1 NC |
|---|---|
| AC-15 rating at 50 Hz | 6 A (24 V), 5 A (110 V), 3 A (220 V), 2 A (380/415 V), 2 A (500 V) |
| Main terminal capacity (lug) | 10 mm² (EMN 40); 50 mm² (EMN 110) |
| Aux. terminal capacity | 2 x 2.5 mm² |
Ordering codes
| Code | Rating | Description |
|---|---|---|
| EMN402X3 | 1.4-2.3 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN403X3 | 2-3.3 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN405XX | 3-5 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN407X5 | 4.5-7.5 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN40100 | 6-10 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN40150 | 9-15 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN40230 | 14-23 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN40330 | 20-33 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN40400 | 24-40 A | EMN 40 thermal overload relay, directly operated (frame listed as EMN 20) |
| EMN50230 | 14-23 A | EMN 110 thermal overload relay, directly operated (frame listed as EMN 50) |
| EMN50330 | 20-33 A | EMN 110 thermal overload relay, directly operated (frame listed as EMN 50) |
| EMN50500 | 30-50 A | EMN 110 thermal overload relay, directly operated (frame listed as EMN 50) |
| EMN50600 | 30-60 A | EMN 110 thermal overload relay, directly operated (frame listed as EMN 50) |
| EMN50750 | 45-75 A | EMN 110 thermal overload relay, directly operated (frame listed as EMN 50) |
| EMN50100 | 66-110 A | EMN 110 thermal overload relay, directly operated (frame listed as EMN 50) |
