• LS Electric IMP Intelligent Motor Protection Relay (0.5-100 A)
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LS Electric IMP Intelligent Motor Protection Relay (0.5-100 A)

LS Electric IMP Intelligent Motor Protection Relay (0.5-100 A)

LS Electric IMP intelligent motor protection relays with tunnel-type 3-phase current sensing, full current protection suite including ground fault, and optional 4-20 mA or Modbus RS-485 communication.

Key features

  • Overcurrent, locked rotor, phase loss, unbalance, phase reversal, undercurrent, ground fault and instantaneous protection
  • Ground fault by zero-sequence (ZCT) or residual current detection
  • Thermal inverse, inverse and definite-time characteristics; trip time 1-60 s at 600%
  • Integrated or separable 4-digit 7-segment display (cable sold separately)
  • 35 mm DIN rail or screw mounting; 0.5-10 A or 5-100 A ratings

Specifications

Series IMP (Beyond X)
Protection element C (current)
Connection Tunnel (feed-through)
Rated frequency 50/60 Hz
Auxiliary contacts 3-SPST (1a1b + instantaneous 1a), 3 A/250 V AC
Start delay / operating time 1-200 s / 1-60 s
Auto reset 1-20 min
ZCT input 200 mA/100 mV (LS ZCT)
Operating temperature -10 to 55 C
Power consumption 3 W max.
Source LS Electric EMPR Series catalog C15031-15 (2025-11), p. 70, 134
IMP-C-NO-10A-110/220 Communication: None | Current setting range: 0.5-10 A | Control voltage: AC/DC 85-245 V
IMP-C-NO-10A-24/36 Communication: None | Current setting range: 0.5-10 A | Control voltage: AC/DC 24-36 V
IMP-C-NO-100A-110/220 Communication: None | Current setting range: 5-100 A | Control voltage: AC/DC 85-245 V
IMP-C-NO-100A-24/36 Communication: None | Current setting range: 5-100 A | Control voltage: AC/DC 24-36 V
IMP-C-A420-10A-110/220 Communication: 4-20 mA output | Current setting range: 0.5-10 A | Control voltage: AC/DC 85-245 V
IMP-C-A420-10A-24/36 Communication: 4-20 mA output | Current setting range: 0.5-10 A | Control voltage: AC/DC 24-36 V
IMP-C-A420-100A-110/220 Communication: 4-20 mA output | Current setting range: 5-100 A | Control voltage: AC/DC 85-245 V
IMP-C-A420-100A-24/36 Communication: 4-20 mA output | Current setting range: 5-100 A | Control voltage: AC/DC 24-36 V
IMP-C-M485-10A-110/220 Communication: Modbus RS-485 | Current setting range: 0.5-10 A | Control voltage: AC/DC 85-245 V
IMP-C-M485-10A-24/36 Communication: Modbus RS-485 | Current setting range: 0.5-10 A | Control voltage: AC/DC 24-36 V
IMP-C-M485-100A-110/220 Communication: Modbus RS-485 | Current setting range: 5-100 A | Control voltage: AC/DC 85-245 V
IMP-C-M485-100A-24/36 Communication: Modbus RS-485 | Current setting range: 5-100 A | Control voltage: AC/DC 24-36 V
Motor Protection RelaysLS Electric
12 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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LS Electric IMP Intelligent Motor Protection Relay (0.5-100 A)

Brand LS Electric·Motor Protection Relays

Available part numbers (12)

IMP-C-NO-10A-110/220, IMP-C-NO-10A-24/36, IMP-C-NO-100A-110/220, IMP-C-NO-100A-24/36, IMP-C-A420-10A-110/220, IMP-C-A420-10A-24/36, IMP-C-A420-100A-110/220, IMP-C-A420-100A-24/36, IMP-C-M485-10A-110/220, IMP-C-M485-10A-24/36 + 2 more — see full table ↓

How to order

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Product codes & specifications
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Product codeSpec
IMP-C-NO-10A-110/220Communication: None | Current setting range: 0.5-10 A | Control voltage: AC/DC 85-245 V
IMP-C-NO-10A-24/36Communication: None | Current setting range: 0.5-10 A | Control voltage: AC/DC 24-36 V
IMP-C-NO-100A-110/220Communication: None | Current setting range: 5-100 A | Control voltage: AC/DC 85-245 V
IMP-C-NO-100A-24/36Communication: None | Current setting range: 5-100 A | Control voltage: AC/DC 24-36 V
IMP-C-A420-10A-110/220Communication: 4-20 mA output | Current setting range: 0.5-10 A | Control voltage: AC/DC 85-245 V
IMP-C-A420-10A-24/36Communication: 4-20 mA output | Current setting range: 0.5-10 A | Control voltage: AC/DC 24-36 V
IMP-C-A420-100A-110/220Communication: 4-20 mA output | Current setting range: 5-100 A | Control voltage: AC/DC 85-245 V
IMP-C-A420-100A-24/36Communication: 4-20 mA output | Current setting range: 5-100 A | Control voltage: AC/DC 24-36 V
IMP-C-M485-10A-110/220Communication: Modbus RS-485 | Current setting range: 0.5-10 A | Control voltage: AC/DC 85-245 V
IMP-C-M485-10A-24/36Communication: Modbus RS-485 | Current setting range: 0.5-10 A | Control voltage: AC/DC 24-36 V
IMP-C-M485-100A-110/220Communication: Modbus RS-485 | Current setting range: 5-100 A | Control voltage: AC/DC 85-245 V
IMP-C-M485-100A-24/36Communication: Modbus RS-485 | Current setting range: 5-100 A | Control voltage: AC/DC 24-36 V

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