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1SBN050020R1000 ABB RT5/32 Surge Suppressor Module for Contactors
ABB RT5/32 is a compact unpolarised transil-diode surge suppressor for 12–32 V DC conventional contactor coils, providing rapid voltage clipping and high-frequency interference attenuation.
£31.69
Why Choose the ABB RT5/32 Surge Suppressor?
The ABB RT5/32, order code 1SBN050020R1000, is a compact transil-diode surge suppressor designed to protect DC-operated 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 steep, high-voltage surges. The RT5/32 provides very fast voltage clipping to attenuate steep wavefronts and high-frequency interference while offering good energy absorption for reliable industrial control-system protection.
Designed for conventional DC contactors with a rated control circuit voltage of 12–32 V DC, the RT5/32 uses an unpolarised suppression circuit for straightforward installation. It clips onto the top or side of a compatible ABB contactor or contactor relay without changing the host device’s overall dimensions.
Key Advantages
- Compact transil-diode surge suppressor for DC contactor coils.
- 12–32 V DC operating range suits low-voltage control circuits.
- Provides very fast clipping of steep transient-voltage wavefronts.
- Helps attenuate high-frequency electrical interference.
- Unpolarised design simplifies installation and connection.
- Clip-on mounting does not change the host device’s overall dimensions.
Key Features
- ABB RT5 surge suppressor series.
- Transil-diode suppression technology.
- 12–32 V DC rated control circuit voltage.
- Good energy absorption for contactor coil suppression.
- Fast attenuation of steep fronts and high frequencies.
- Unpolarised suppression circuit.
- No operating delay during contactor energisation.
- Compact top- or side-mounted accessory design.
Reliable Suppression for DC Contactor Circuits
Contactor coils are inductive loads that store electromagnetic energy while energised. When the coil circuit opens, this energy can generate a steep transient voltage capable of disrupting electronic controls, degrading insulation or damaging sensitive circuit components.
The ABB RT5/32 uses a transil diode to clamp the resulting voltage peak rapidly and attenuate high-frequency interference. Its unpolarised design, good energy absorption and compact clip-on mounting make it suitable for protecting low-voltage DC contactor circuits in industrial automation equipment.
Typical Applications
- Low-voltage DC contactor coil protection.
- PLC-controlled contactor circuits.
- Industrial machinery and automation systems.
- Motor-control centres and starter panels.
- Power distribution and load-switching equipment.
- Control circuits containing surge-sensitive electronic components.
Technical Specifications
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| Device Type | Accessory | |
|---|---|---|
| Manufacturer | ABB | |
| Series | RT5 | |
| Model | RT5/32 | |
| Order code | 1SBN050020R1000 | |
| Product type | Contactor coil surge suppressor | |
| Suppression component | Transil diode | |
| Rated control circuit voltage | 12–32 V DC | |
| Polarity | Unpolarised | |
| Mounting type | Clip-on top or side mounting | |
| Compatible devices | ASL09, ASL12, ASL16, VASL09, VASL12, VASL16, NSL and GAE75 | |
| Operating temperature | −20 to +70 °C | |
| Dimensions (W × H × D) | 30.25 × 10.5 × 32.4 mm | |
| Weight | 0.015 kg | |
| EAN | 3471522121608 |
Frequently Asked Questions
What is the ABB RT5/32 used for?
The RT5/32 suppresses transient overvoltages generated when a DC-operated contactor coil is switched off, helping protect control-system components and reduce electrical interference.
What voltage range does the RT5/32 support?
The surge suppressor is designed for contactor control circuits rated from 12–32 V DC.
What suppression technology does the RT5/32 use?
The RT5/32 uses a transil diode to provide rapid voltage clipping and attenuate steep transient wavefronts and high-frequency interference.
Is the ABB RT5/32 polarity sensitive?
No. The RT5/32 uses an unpolarised suppression system, simplifying its installation in compatible DC contactor circuits.
How is the ABB RT5/32 installed?
The suppressor clips onto the top or side of a compatible ABB contactor or contactor relay without changing the host device’s overall dimensions.
Trusted ABB Contactor Protection
ABB RT5 surge suppressors provide rapid and dependable transient-voltage control for DC contactor coils, helping protect industrial automation equipment and improve control-system reliability.
