Thermal overload relay, TeSys LRD, 12...18 A, class 10A
LRD21
AEDÂ 146.22
AEDÂ 94.00
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LRD21
Thermal overload relay, TeSys LRD, 12...18 A, class 10A
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Thermal overload relay, TeSys LRD, 12...18 A, class 10A
AEDÂ 146.22
AEDÂ 94.00
Description
TeSys LRD thermal overload relay, 18A/690V, thermal setting range 12-18A, tripping class 10A, for protection of 3-phase motors 7.5kW@400V. Differential device with phase failure and load unbalance detection. It provides a thermal adjustement dial, a manual-automatic reset selector, a test selector for simulation of a tripping, reset and stop buttons, a flag indicator and 2 auxiliary contacts 1NO+1NC for fault signalling. Settings are protected by a transparent cover lockable by sealing. Connection by screw clamp terminals, it connects directly to the bottom terminals of 3-pole contactors LC1D18-D38. Mounting on DIN rail or screw fixing, separated from the contactor, with use of a terminal block LAD7B106 (to be ordered separately). Multi standards certified (IEC, UL, CSA, CCC, EAC, ATEX, Marine)
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Product Details
| Activity | PPCTR |
|---|---|
| Part Number | LRD21 |
| Weight | 147.0 g |
| Package1 Length*Width*Height | 8.8 cm x 7.8 cm x 5.0 cm |
| Country of Manufacturing | France |
| [Ith] conventional free air thermal current | 5 A for signalling circuit |
| [ue] Rated Operational Voltage | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| [Ui] rated insulation voltage | power circuit: 600 V conforming to CSA, power circuit: 600 V conforming to UL, power circuit: 690 V conforming to IEC 60947-4-1 |
| [Uimp] rated impulse withstand voltage | 6 kV |
| ambient air temperature for operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| ambient air temperature for storage | -60-70 °C |
| associated fuse rating | 4 A gG for signalling circuit, 4 A BS for signalling circuit |
| auxiliary contact composition | 1 NO + 1 NC |
| climatic withstand | conforming to IACS E10 |
| compatibility code | LRD |
| connections - terminals | control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible without cable end, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² flexible with cable end, control circuit: screw clamp terminals 2 cable(s) 1-2.5 mm² solid, power circuit: screw clamp terminals 1 cable(s) 1.5-10 mm² flexible without cable end, power circuit: screw clamp terminals 1 cable(s) 1-4 mm² flexible with cable end, power circuit: screw clamp terminals 1 cable(s) 1-6 mm² solid |
| control type | red push-button: stop, blue push-button: reset |
| depth | 70 mm |
| device short name | LRD |
| dielectric strength | 1.89 kV at 50 Hz conforming to IEC 60947-1 |
| flame retardance | V1 conforming to UL 94 |
| height | 66 mm |
| IP degree of protection | IP20 conforming to IEC 60529 |
| mechanical robustness | vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
| mounting support | plate, with specific accessories, rail, with specific accessories, under contactor |
| net weight | 0.124 kg |
| network frequency | 0...400 Hz |
| network type | AC, DC |
| permissible current | 1.5 A at 240 V AC-15 for signalling circuit, 0.1 A at 250 V DC-13 for signalling circuit |
| phase failure sensitivity | tripping current 130 % of Ir on two phase, the last one at 0 |
| product certifications | IEC, UL, CSA, CCC, EAC, BV, RINA, DNV-GL, LROS (Lloyds register of shipping), ATEX INERIS, UKCA |
| product compatibility | LC1D32, LC1D18, LC1D25, LC1D38 |
| product or component type | differential thermal overload relay |
| range | TeSys, TeSys Deca |
| rated operational voltage limits | 690 V AC 0...400 Hz for power circuit conforming to IEC 60947-4-1 |
| relay application | motor protection |
| standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495 |
| temperature compensation | -20-60 °C |
| thermal overload class | class 10A conforming to IEC 60947-4-1 |
| thermal protection adjustment range | 12-18 A |
| tightening torque | control circuit: 1.7 N.m - on screw clamp terminals, power circuit: 2.5 N.m - on screw clamp terminals |
| tripping threshold | 1.14 +/- 0.06 Ir conforming to IEC 60947-4-1 |
| width | 45 mm |
| ambient air temperature for operation | -20-60 °C without derating conforming to IEC 60947-4-1 |
| standards | EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, CSA C22.2 No 60947-4-1, CSA C22.2 No 60947-5-1, GB/T 14048.4, GB/T 14048.5, EN 50495 |
| product compatibility | LC1D32, LC1D18, LC1D25, LC1D38 |
| mechanical robustness | vibrations: 6 Gn conforming to IEC 60068-2-6, shocks: 15 Gn for 11 ms conforming to IEC 60068-2-7 |
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