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Schneider Electric LRN21N Easy TeSys Protect Thermal Overload Relay, 12–18 A, Trip Class 10A
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$25.00 USD
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Overview
Schneider Electric Easy TeSys Protect LRN21N is an E-type 3-pole thermal overload relay engineered for reliable motor protection. It offers a 12…18 A adjustable current range, Trip Class 10A performance, and phase-loss sensitivity, making it an ideal companion for LC1N18…38 contactors in AC networks up to 690 V.
- Adjustable current range: 12…18 A
- Trip Class 10A in accordance with IEC 60947-4-1
- Phase-loss sensitive (30 % In single-phase)
- Auxiliary contacts: 1 NO + 1 NC
- Mounts directly under contactor or on DIN-rail/plate (accessory)
- Compact size: 45 mm (W) × 44.5 mm (H) × 70 mm (D)
- IP20 protection; operating temperature −20…60 °C (no derating)
| Product ID | LRN21N |
| Brand | Schneider Electric |
| Series | Easy TeSys Protect |
| Device short name | LRN |
| Product type | E-type 3-pole thermal overload relay |
| Application | Motor protection |
| Trip class | 10A (IEC 60947-4-1) |
| Adjustable current range | 12…18 A |
| Phase-loss sensitivity | 30 % In single phase |
| Trip threshold | 1.14 ± 0.06 In |
| Auxiliary contacts | 1 NO + 1 NC |
| Conventional free-air thermal current Ith | 5 A |
| Rated operational voltage Ue | ≤ 690 V AC |
| Rated insulation voltage Ui | 690 V |
| Rated impulse withstand voltage Uimp | 6 kV |
| Associated contactors | LC1N18…38 |
| Network type / frequency | AC, 50…60 Hz |
| Mounting | Under contactor; plate or DIN-rail with accessory |
| Control type | Red push-button Stop, Green push-button Reset |
| Signal indicator | Trip indicator window |
| Colour | Grey (RAL 7011) |
| IP rating | IP20 (IEC 60529) |
| Operating temperature (no derating) | −20…60 °C |
| Operating temperature (with derating) | −20…70 °C |
| Storage temperature | −60…80 °C |
| Temperature compensation | −20…60 °C |
| Shock resistance | 6 gn / 11 ms (IEC 60068-2-7) |
| Vibration resistance | 6 gn (IEC 60068-2-6) |
| Height | 44.5 mm |
| Width | 45 mm |
| Depth | 70 mm |
| Net weight | 0.124 kg |
| Wire capacity (power, soft w/o lug) | 1 × 1.5–6 mm² |
| Wire capacity (power, soft w/ lug) | 1 × 1–4 mm² |
| Wire capacity (power, solid) | 1 × 1–6 mm² |
| Wire capacity (signal, soft) | 2 × 1–2.5 mm² |
| Recommended tightening torque | 2.5 N·m |
| Fuse rating (power) | 35 A gG / 20 A aM |
| Fuse rating (signal) | 5 A gG |
| Standards | IEC 60947-4-1, IEC 60947-1, IEC 60947-5-1, EN/IEC 60335-1 Cl. 30.2 |
| Certifications | CB Scheme, CCC, CE |
| Flame resistance | 850 °C (IEC 60068-2-1) |
| Warranty | 18 months |
| Package dimensions (H × W × L) | 51.89 mm × 81.94 mm × 84.79 mm |
| Package weight | 152 g |
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