ABB 1SBN050020R1002 RT5/90 surge suppressor with transil diode technology designed for 50–90 V DC contactor coil protection in industrial control applications.
£48.76
The ABB 1SBN050020R1002 is a reliable surge suppressor accessory designed to protect ABB contactor coils from voltage spikes and switching transients. As part of the ABB RT5/90 surge suppressor series, this compact protection device helps reduce overvoltage peaks and improve the operational reliability of industrial switching systems.
This surge suppressor is designed for use with DC operated conventional contactors, limiting transient overvoltages generated when inductive loads are switched. By reducing electrical stress on contactor coils and associated control equipment, it supports improved system durability and reliable industrial operation.
With a 50–90 V DC control voltage range, the ABB 1SBN050020R1002 RT5/90 provides effective coil suppression using transil diode technology. Its compact design enables straightforward installation on compatible ABB contactors and contactor relays in industrial automation applications.
Contactor coils create electrical transients when de-energised due to stored inductive energy. Surge suppressors help control these voltage spikes, reducing interference and protecting sensitive electrical components within industrial control systems.
The ABB RT5 series provides engineers with compact and effective solutions for improving contactor performance. The 1SBN050020R1002 RT5/90 is designed for applications where dependable DC coil protection and reduced electrical disturbance are required.
| Manufacturer | ABB |
|---|---|
| Model | 1SBN050020R1002 |
| Alternative designation | RT5/90 |
| Product type | Surge suppressor unit |
| Series | ABB RT5 |
| Suppressor type | Transil diode |
| Rated control voltage | 50–90 V DC |
| Application | DC contactor coil protection |
| Maximum voltage rating | 90 V |
| Mounting type | Contactor mounted accessory |
| Operating temperature | -20 to +70 °C |
| Dimensions | approx. 30.25 × 10.5 × 32.4 mm |
The ABB 1SBN050020R1002 is a surge suppressor used to protect DC contactor coils from switching voltage spikes and electrical transients.
The ABB RT5/90 surge suppressor is designed for 50–90 V DC control voltage applications.
The ABB 1SBN050020R1002 uses transil diode technology to reduce overvoltage peaks and limit transient disturbances.
The device is typically installed on compatible ABB contactors or contactor relays within industrial control panels.
The ABB RT5/90 surge suppressor operates within an ambient temperature range of approximately -20 to +70 °C.
ABB surge suppressors are widely used by electrical engineers and automation specialists to protect contactor systems, reduce switching disturbances and improve industrial control reliability.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...