ABB RV5/250 is a compact unpolarised varistor surge suppressor for 110–250 V AC/DC conventional contactor coils, designed to limit switching overvoltages and reduce high-frequency electrical interference.
£20.71
The ABB RV5/250, order code 1SBN050010R1002, is a compact varistor surge suppressor designed to protect contactor control circuits from transient overvoltages. It reduces voltage peaks generated when an energised contactor coil is switched off, helping protect electronic devices, insulation and sensitive control components.
Switching an inductive contactor coil releases stored electromagnetic energy that can produce high-voltage surges and electrical interference. The RV5/250 limits the maximum overvoltage peak and attenuates high-frequency pre-damping oscillations, supporting dependable operation in industrial automation and motor-control systems.
Designed for conventional contactors with a rated control circuit voltage of 110–250 V AC/DC, the RV5/250 supports AC operation at 50/60 Hz as well as DC control circuits. Its unpolarised varistor design and clip-on mounting enable straightforward integration with compatible ABB contactors.
Contactor coils are inductive loads that store electromagnetic energy while energised. When the coil circuit opens, this energy can produce a steep transient voltage capable of disrupting electronic controls, accelerating insulation wear or damaging sensitive circuit components.
The ABB RV5/250 uses a varistor connected across the contactor coil to restrict the resulting voltage peak. Its high energy absorption, effective damping and compatibility with both AC and DC control supplies make it suitable for industrial automation, motor control and power-switching equipment.
| Manufacturer | ABB |
|---|---|
| Series | RV5 |
| Model | RV5/250 |
| Order code | 1SBN050010R1002 |
| Product type | Contactor coil surge suppressor |
| Suppression component | Varistor |
| Rated control circuit voltage | 110–250 V AC/DC |
| AC control frequency | 50 / 60 Hz |
| Polarity | Unpolarised |
| Mounting type | Clip-on top or side mounting |
| Operating temperature | −20 to +70 °C |
| Dimensions (W × H × D) | 30.25 × 10.5 × 32.4 mm |
| Weight | 0.015 kg |
| EAN | 3471522121349 |
The RV5/250 suppresses transient overvoltages generated when a conventional contactor coil is switched off, helping protect control-system components and reduce electrical interference.
The surge suppressor is designed for contactor control circuits rated from 110–250 V AC/DC.
Yes. The RV5/250 supports both 110–250 V AC at 50/60 Hz and 110–250 V DC contactor control circuits.
The RV5/250 uses an unpolarised varistor to limit the maximum overvoltage peak and attenuate high-frequency oscillations produced during coil switching.
The suppressor clips onto the top or side of a compatible ABB contactor or contactor relay without changing the host device’s overall dimensions.
ABB RV5 surge suppressors provide compact and dependable transient-voltage control for contactor coils, helping protect industrial automation equipment and improve control-system reliability.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...