hide show
Product name
Product or component type
electronic thermal overload relay
Device short name
Relay application
motor protection
Product compatibility
  • NSX circuit breaker
  • LC1D115
  • LC1D150
    • Network type
      Signalling function
      Thermal protection adjustment range
      60-100 A
      [Ui] rated insulation voltage
    • power circuit: 1000 V conforming to IEC 60947-4-1
    • power circuit: 600 V conforming to CSA
    • power circuit: 600 V conforming to UL
      • Network frequency
        50...60 Hz
        [Us] rated supply voltage
        24 V DC
        Supply voltage limits
        17-32 V
        Mounting support
      • under contactor
      • rail
        • Tripping threshold
        • 1.05 +/- 0.06 In alarm conforming to IEC 60947-4-1
        • 1.12 +/- 0.06 In de-energisation conforming to IEC 60947-4-1
          • [Ith] conventional free air thermal current
            5 A for signalling circuit
            [Ue] rated operational voltage
            690 V 50...60 Hz
            Associated fuse rating
            5 A gG for signalling circuit
            [Uimp] rated impulse withstand voltage
            Phase failure sensitivity
            tripping in 4 s +/- 20 % conforming to IEC 60947-4-1
            Control type
          • red push-button: stop
          • blue push-button: reset
            • Temperature compensation
              -20-60 °C
              Switching capacity in mA
              0...150 mA
              Maximum voltage drop
              <2.5 V closed state
              Connections - terminals
            • power circuit: bars
            • control circuit: screw clamp terminals 1 cable(s) 0.5-1.5 mm² flexible without cable end
            • control circuit: screw clamp terminals 2 cable(s) 0.5-1.5 mm² flexible without cable end
            • alarm circuit: screw clamp terminals 1 cable(s) 0.5-1.5 mm² flexible without cable end
              • Tightening torque
              • alarm circuit: 0.45 N.m - on screw clamp terminals
              • power circuit: 18 N.m - on bars M8
              • control circuit: 1.2 N.m - on screw clamp terminals
                • Depth
                  132 mm
                  Net weight
                  0.9 kg
                  Compatibility code
                  Protective treatment
                  TH conforming to IEC 60068
                  IP degree of protection
                  IP20 conforming to IEC 60529
                  Ambient air temperature for operation
                  -20-60 °C without derating conforming to IEC 60947-4-1
                  Ambient air temperature for storage
                  -60-70 °C
                  Operating altitude
                  <= 2000 m without derating
                  Mechanical robustness
                • vibrations: 2 Gn, 5...300 Hz conforming to IEC 60068-2-6
                • shocks: 13 Gn for 11 ms conforming to IEC 60068-2-7
                  • Dielectric strength
                    6 kV at 50 Hz conforming to IEC 60255-5
                  • IEC 255-8
                  • EN 60947-4-1
                  • VDE 0660
                  • IEC 60947-4-1
                  • IEC 255-17
                    • Product certifications
                    • UL 508
                    • CSA 22-2
                      • Sustainable offer status
                        Green Premium product
                        REACh Regulation
                        Free of Substances of Very High Concern above the threshold
                        EU RoHS Directive
                        Mercury free
                        RoHS exemption information
                        China RoHS Regulation
                        Product out of China RoHS scope. Substance declaration for your information
                        Environmental Disclosure
                        Circularity Profile
                        The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins
                        18 months

                        Frequently Asked Questions

                        hide show

                        Can you remotely reset electronic overloads LR9D?

                        No. You cannot remotely reset LR9D electronic overloads.
                        There is no provision or attachment  to wire external reset button to overload.

                        Do we have Type 2 Co-Ordination Chart for the LT47 overload relays?

                        LT47 is not an overload relay but an overcurrent relay, working on a definite time characteristic : current threshold and time based function.

                        We do not have Coordination type 2 tables for LT47.
                        However, LT47 is an overcurrent relay. It performs a motor current measurement through its internal CT. So, LT47 doesn't add impedance to the motor control circuit and the coordination only results from the characteristics of the short circuit protection (fuses or circuit-breaker) and of the contactor. So the coordination tables we publish for LTMR can be used when LT47 is used.

                        Is there a direct replacement for TR2D09307 overload?

                        There is no direct replacement for TR2D09307 but alternative is LRD07 ( will not fit to existing contactor)

                        TeSys LRD thermal overload relays - 1.6...2.5 A - class 10A
                        For more information see:

                        What are the wiring terminals on the IEC LRD* overload relays?

                        Product Line:
                        Tesys D line Overload Relays
                        The normally closed overload contact are terminals 95 & 96; and the normally open overload contact are terminals 97 & 98.
                        T1 T2 and T3 are the load terminals. 

                        The normally closed control circuit contact will open when there is a fault, this contact is typically used in series with the control circuit. 

                        The normally open trip signal contact closes when a fault occurs which is typically used to control a pilot light, or alarm.