Rishabh
67 Rishabh products listed in this category. For prices and availability, send an enquiry.
Products
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Enquire about 252-PVR
252-PVR Phase Sequence & Phase Failure Relay
3-phase relay that checks correct phase sequence (L1, L2, L3) and phase failure, and trips if the supply drops below 85% of nominal; for motors, pumps and compressors.
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Enquire about 252-PVS
252-PVS 3 Phase 4 Wire Over Voltage Relay, Adjustable Time Delay
3 phase 4 wire AC over voltage relay with user-adjustable time delay up to 10 s and 100 - 125% setpoint, for 57 - 480 V systems; DPDT contacts, auto reset.
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Enquire about 252-PVU
252-PVU Single Phase Under Voltage Relay, Adjustable Differential
Single Phase AC under voltage relay with adjustable differential (1 - 15%), setpoint 75 - 100% of nominal; factory-set time delay up to 30 s.
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Enquire about 252-PVV
252-PVV 3 Phase 4 Wire Under Voltage Relay, Adjustable Differential
3 Phase 4 Wire AC under voltage relay with adjustable differential (1 - 15%), setpoint 75 - 100% of nominal; factory-set time delay up to 30 s.
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Enquire about 252-PVX
252-PVX 3 Phase 4 Wire Under Voltage Relay, Adjustable Time Delay
3 phase 4 wire AC under voltage relay with user-adjustable time delay up to 10 s and 75 - 100% setpoint, for 57 - 480 V systems; DPDT contacts, auto reset.
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Enquire about 252-PVZ
252-PVZ Single Phase Under Voltage Relay, Adjustable Time Delay
Single phase AC under voltage relay with user-adjustable time delay up to 10 s and 75 - 100% setpoint, for 57 - 480 V systems; DPDT contacts, auto reset.
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Enquire about 253-EFR
253-EFR Earth Fault Relay
Earth fault relay for CBCT, neutral or summation CTs with 1 A or 5 A secondary: trip setting 10 - 90%, delay 1 - 10 s or instantaneous, manual / remote reset, 230 V AC aux.
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Enquire about 253-MPR
253-MPR Motor Protection Relay (Phase Loss, Reversal, Unbalance)
Motor protection relay using negative sequence voltage sensing: trips on phase reversal, phase loss and voltage unbalance (30 - 70 V), delay 3.5 s; auto, manual or remote reset.
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Enquire about 253-PAD
253-PAD Single Phase Under & Over Current Relay
Single-phase combined under and over current relay with 2 relays and 2 independent setpoints (40 - 120%), adjustable delay up to 10 s; DPDT contacts, auto reset.
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Enquire about 253-PAP
253-PAP 3 Phase Phase Over Current Relay
3-phase 3 or 4 wire AC over current relay from 1 A / 5 A CT: trips when the current exceeds the 40 - 120% setpoint after an adjustable delay up to 10 s; DPDT contacts, auto reset.
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Enquire about 253-PAV
253-PAV 3 Phase Phase Under Current Relay
3-phase 3 or 4 wire AC under current relay from 1 A / 5 A CT: trips when the current falls below the 40 - 120% setpoint after an adjustable delay up to 10 s; DPDT contacts, auto reset.
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Enquire about 253-PBV
253-PBV Transducer Trip Relay, High / Low
Trip relay for transducer outputs (0-1 to 4-20 mA or 1 - 50 V DC) with combined high and low trip points; adjustable setpoints and delay, DPDT contacts.
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Enquire about 253-PHD
253-PHD Under & Over Frequency Relay
Under & Over frequency relay for 50, 60 or 400 Hz systems with adjustable setpoint and differential (0.1 - 3.0 Hz at 50 / 60 Hz); for genset speed, standby and mains supplies.
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Enquire about 253-PVB
253-PVB Single Phase Under & Over Voltage Relay, Adjustable Differential
Single Phase AC under & over voltage relay with adjustable differential (1 - 15%), 2 relays and 2 setpoints, setpoint 75 - 125% of nominal; factory-set time delay up to 30 s.
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Enquire about 253-PVE
253-PVE 3 Phase 4 Wire Under & Over Voltage Relay, Adjustable Differential
3 Phase 4 Wire AC under & over voltage relay with adjustable differential (1 - 15%), 2 relays and 2 setpoints, setpoint 75 - 125% of nominal; factory-set time delay up to 30 s.
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Enquire about 253-PVM
253-PVM 3 Phase 3 Wire Under & Over Voltage Relay, Adjustable Differential
3 Phase 3 Wire AC under & over voltage relay with adjustable differential (1 - 15%), 2 relays and 2 setpoints, setpoint 75 - 125% of nominal; factory-set time delay up to 30 s.
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Enquire about 256-PAS
256-PAS Reverse Power Relay
Reverse power relay for generator sets and feeders: detects loss of the prime mover and prevents motoring; trip adjustable 2 - 20% of rated current, delay 0 - 20 s.
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Enquire about 256-PCC
256-PCC Hot Spot 6 RTD Temperature Relay
Temperature trip relay for up to six RTD sensors (Pt100 or 10 Ω copper) in motors or transformers; 100 °C adjustment span, operating time < 100 ms, automatic reset.
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Enquire about 256-PHV
256-PHV Combined Under / Over Voltage & Frequency Relay
Generator and supply monitor in one: under / over voltage (75 - 125%) and under / over frequency setpoints with adjustable delays of 1 - 30 s; for 50, 60 or 400 Hz systems.
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Enquire about 256-PLD
256-PLD Synchro-Check Relay, Live & Dead Bus
Synchro-check relay with dead bus detection: energises when the two supplies match, or when the bus is dead so a generator can connect without synchronising.
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Enquire about 256-PLL
256-PLL Synchro-Check Relay, Live Bus
Synchro-check relay for paralleling two AC systems: monitors voltage, phase and frequency of both and energises only when they match, so the breaker can close safely.
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Enquire about 256-PRA
256-PRA Hot Spot 3 RTD Temperature Relay, 3 Setpoints
Temperature trip relay for up to three RTD zones (motor or transformer windings): picks the highest reading, gives a 1 mA output and 3 adjustable setpoints with SPDT relays.
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Enquire about 256-PRB
256-PRB Hot Spot 3 RTD Temperature Relay, 2 Setpoints
Temperature trip relay for up to three RTD zones (motor or transformer windings): picks the highest reading, gives a 1 mA output and 2 adjustable setpoints with SPDT relays.
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Enquire about 256-PRC
256-PRC Hot Spot 3 RTD Temperature Relay, 1 Setpoint
Temperature trip relay for up to three RTD zones (motor or transformer windings): picks the highest reading, gives a 1 mA output and 1 adjustable setpoint with SPDT relay.
