TeSys LR97D electronic overload relay for motor - 1.2...7 A - 100...120 V AC - LR97D07F7
TeSys LR97D electronic overcurrent relay, 7A/690V, to be supplied with 100-120V AC, for protection of motors with a rated current 1.2-6A.
It provides 3 dials to adjust the protection, LOAD (1.2-7A) for the overcurrent level, O-TIME (0.3-10sec) for the acceptable duration of the overcurrent, D-TIME (0.5-30sec) for the starting duration.
In addition, the device trips when the current is higher than 3 x LOAD during more than 0.5sec in steady state and if there is a missing phase during more than 3sec.
The settings include selectors for 1-phase/3-phase motors and manual/automatic reset, and the device has a reset button, a test/stop button, 2 LED indicators (Run/Trip), 2 auxiliary contacts 1NO/NC for fault signalling.
Settings can be locked by sealing the transparent cover.
For direct attachement to the bottom terminals of a 3-pole contactor LC1D09-D38, with screw clamp terminals on bottom, the separate mounting from the contactor is possible using the terminal block LAD7B106 (to be ordered separately).
Multi-standards certified (IEC, UL, CSA, CCC, EAC), compliant RoHs/Reach.
| Attribute | Value |
|---|---|
| SKU | LR97D07F7 |
| product certifications | GOST, CSA, UL |
| ambient air temperature for storage | -30-80 °C |
| ambient air temperature for operation | -25-60 °C conforming to IEC 60947-4-1 |
| reset | automatic reset 120 s fixed, electrical by interruption of power supply for minimum 0.1 s, manual reset |
| resistance to electrostatic discharge | 6 kV in indirect mode, 8 kV in air |
| time range | 0.2...10 s - O-time knob, 0.3...10 s - O-time knob, 0.5..30 s - D-time knob |
| product or component type | Electronic Over Current Relay |
| net weight | 0.172 kg |
| standards | IEC 60947, IEC 60255-6 |
| device short name | LR97 |
| range | TeSys LR |
| product compatibility | LC1D09...D38 |
| product name | TeSys D |
| [Ith] conventional free air thermal current | 3 A for control circuit |
| [Us] rated supply voltage | 100...120 V AC |
| signalling function | 2 LEDs |
| relay application | sensitivity to phase failure, locked rotor, mechanical jamming I > 3 x Isetting, overload Imax > Isetting |
| tripping threshold | 1.2...6 A |
| resistance to radiated fields | 10 V/m level 3 |
| maximum power | 28 W at 110 V DC conforming to IEC 60947, 28 W at 220 V DC conforming to IEC 60947, 55 W at 24 V DC conforming to IEC 60947, 55 W at 48 V DC conforming to IEC 60947, 140 VA at 48 V AC conforming to IEC 60947, 360 VA at 110 V AC conforming to IEC 60947, 360 VA at 220 V AC conforming to IEC 60947, 70 VA at 24 V AC conforming to IEC 60947 |
| network frequency | 50...60 Hz |
| connections - terminals | control circuit: cable 1 x 1-25 mm²flexible with cable end, control circuit: lug-clamp 1 x 1-25 mm²flexible without cable end, control circuit: lug-clamp 2 x 1-25 mm²flexible with cable end, control circuit: lug-clamp 2 x 1-25 mm²flexible without cable end, control circuit: cable 1 x 1-25 mm²flexible without cable end, power circuit: cable 1 x 1-4 mm²flexible with cable end, power circuit: cable 1 x 1.5-10 mm²flexible without cable end, power circuit: lug-clamp 1 x 1-4 mm²flexible with cable end, power circuit: lug-clamp 1 x 1.5-10 mm²flexible without cable end, control circuit: cable 2 x 1-25 mm²flexible with cable end, control circuit: cable 2 x 1-25 mm²flexible without cable end, control circuit: lug-clamp 1 x 1-25 mm²flexible with cable end |
| height | 67.5 mm |
| mounting support | rail, direct on contactor |
| compatibility code | LR97 |
| width | 45 mm |
| depth | 67.5 mm |
| vibration resistance | 4 gn conforming to IEC 60068-2-6 |
| operating altitude | 2000 m |
| dielectric strength | 2 V 50 Hz conforming to IEC 60255-5 |
| IP degree of protection | IP20 conforming to IEC 60529 |
| network type | AC |
| tightening torque | control circuit: 0.6...1.2 N.m on lug-clamp, power circuit: 2 N.m on cable |
| [Ue] rated operational voltage | 600 V AC 50/60 Hz for power circuit conforming to CSA, 600 V AC 50/60 Hz for power circuit conforming to UL, 690 V AC 50/60 Hz for power circuit conforming to IEC 60947-4-1 |
| Quantity per set | set of 10 |
| protection type | BS fuse 3 A - for control circuit, GB2 circuit breaker 3 A - for control circuit, gG fuse 3 A - for control circuit |
| [Ui] rated insulation voltage | power circuit: 690 V conforming to IEC 60947-4-1, power circuit: 600 V conforming to CSA, power circuit: 600 V conforming to UL |
| protective treatment | TH conforming to IEC 60068 |
| fire resistance | 850 °C conforming to IEC 60695-2-1 |
| contacts type and composition | 1 C/O |
| shock resistance | 15 gn 11 ms conforming to IEC 60068-2-7 |
| thermal protection adjustment range | 1.2-7 A |
| surge withstand | 6 kV conforming to IEC 61000-4-5 |
| resistance to fast transients | 2 kV |
| phase failure sensitivity | < 3 s |
| disturbance radiated/conducted | 10 V conforming to EN 61000-4-6, class A conforming to EN 55011 |