ABB RT5/150 Surge Suppressor 1SBN050020R1003 – 77–150V DC
The ABB RT5/150 (1SBN050020R1003) is a 77–150V DC transil diode surge suppressor for compatible ABB contactors and contactor relays. It provides fast overvoltage suppression, reduces coil switching surges and clips directly onto the contactor without increasing the overall device dimensions.
Description
The ABB RT5/150 (1SBN050020R1003) is a transil diode surge suppressor designed for use with DC-operated conventional contactors and contactor relays having a rated control circuit voltage between 77 and 150V DC. It helps reduce overvoltage peaks generated when an inductive contactor coil is switched off.
When a contactor coil is energized, electromagnetic energy is stored in the coil. When the coil is de-energized, this stored energy can produce a high-voltage surge. The ABB RT5/150 surge suppressor limits these voltage peaks and helps reduce electrical interference and potential stress on connected electronic components.
The RT5/150 uses a transil diode suppression technology and provides fast clipping of steep voltage fronts and high-frequency components. ABB describes the device as a simple, reliable and unpolarized suppression solution with good energy absorption and no operating delay.
Installation is straightforward because the RT5/150 surge suppressor clips directly onto the contactor or contactor relay base. Its mounting arrangement is designed to avoid increasing the overall dimensions of the contactor assembly.
The ABB 1SBN050020R1003 is part of ABB’s surge suppressor accessories for contactors, making it suitable for protecting DC contactor coils in industrial control and motor-control applications. ABB lists it for compatible contactor families including AL9…AL40 and related contactor ranges.
| Specification | Details |
|---|---|
| Manufacturer | ABB |
| Product Reference | 1SBN050020R1003 |
| Type Code | RT5/150 |
| Product Type | Surge Suppressor |
| Product Category | Contactor Accessories |
| Technology | Transil Diode |
| Suppression Function | Coil Surge / Overvoltage Suppression |
| Rated Control Circuit Voltage | 77–150V DC |
| Control Circuit Type | DC |
| Polarity | Unpolarized |
| Mounting | Clip-on |
| Mounting Position | Top or side of compatible contactor/contact relay base |
| Compatible Contactor Range | Compatible ABB DC-operated contactors and contactor relays |
| Compatible Ranges | AL9…AL40, ASL09…ASL16 and other specified ABB ranges |
| Operating Temperature | -20°C to +70°C |
| Product Weight | Approx. 0.015kg |
| Package Weight | Approx. 0.03kg |
| Approx. Dimensions | 10.5 × 30.25 × 32.4mm |
| Energy Absorption | Good energy absorption |
| Switching Response | Very fast clipping |
| Operating Delay | No operating delay |
| Environmental Compliance | RoHS compliant |
| Country of Origin | China / region-dependent listing |
| EAN | 3471522121639 |
Key Features
- ABB RT5/150 surge suppressor
- Exact reference 1SBN050020R1003
- Designed for 77–150V DC contactor coils
- Transil diode surge suppression technology
- Reduces contactor coil overvoltage
- Helps suppress voltage peaks during coil switching
- Fast clipping of steep voltage fronts
- Reduces high-frequency electrical interference
- Unpolarized design
- Good energy absorption
- Simple and reliable suppression solution
- Clip-on mounting
- Mounts directly onto compatible ABB contactors
- Does not increase the overall contactor dimensions
- -20°C to +70°C operating temperature
- RoHS compliant
- Suitable for industrial control applications
Applications
- DC contactor coil protection
- Contactor surge suppression
- Industrial automation
- Motor control panels
- Motor starters
- Industrial control panels
- Machine control systems
- Electrical control cabinets
- DC-operated contactors
- Contactor relay protection
- Switching surge suppression
- Industrial electrical systems
- Automation control circuits
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