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1SDA100651R1 ABB TMA 320-3200 XT5 4-Pole Thermomagnetic Trip Unit
ABB 1SDA100651R1 TMA 320-3200 is a 320 A four-pole thermomagnetic trip unit for Tmax XT5 circuit breakers with a 1600–3200 A magnetic trip range and neutral protection set to 50% of the phase rating.
£497.21
Why Choose the ABB 1SDA100651R1 TMA 320-3200 XT5 4-Pole Trip Unit?
The ABB 1SDA100651R1 is a TMA thermomagnetic trip unit designed for use with ABB Tmax XT5 moulded-case circuit breakers in low-voltage AC and DC power distribution systems. Rated at 320 A, it combines thermal overload protection with magnetic short-circuit protection and is supplied in a four-pole configuration with the neutral pole set to 50% of the phase rating.
As part of the ABB Tmax XT TMA protection range, this release provides dependable circuit protection without requiring an external power supply or electronic trip-unit electronics. The thermal element responds to sustained overload conditions, while the magnetic element provides rapid operation during high-current short circuits, making the unit suitable for industrial and commercial distribution applications.
The TMA 320-3200 XT5 4p InN=50%In is specifically designed for compatible ABB XT5 breaking parts. It has a phase rated current of 320 A, an instantaneous magnetic trip setting range of 1600–3200 A, and a neutral protection level equivalent to 50% of the phase current.
Key Advantages
- Reliable thermomagnetic protection for ABB Tmax XT5 circuit breakers.
- 320 A rated current for low-voltage power distribution applications.
- 1600–3200 A magnetic short-circuit trip range.
- Four-pole configuration with protected neutral conductor.
- Neutral protection set to 50% of the phase rating.
- Suitable for AC and DC applications.
Key Features
- ABB TMA thermomagnetic release.
- 320 A phase rated current.
- Four-pole configuration.
- Compatible with ABB Tmax XT5 moulded-case circuit breakers.
- Thermal protection for sustained overload conditions.
- Magnetic protection for high-current short circuits.
- Instantaneous trip setting from 1600–3200 A.
- Neutral current rating of 50% of the phase rating.
Reliable Thermomagnetic Protection for Power Distribution
Thermomagnetic trip units combine two complementary protection principles. The thermal element responds to sustained overcurrents that can overheat cables and equipment, while the magnetic element reacts rapidly to severe short-circuit currents, providing dependable protection without the need for an external power source.
The ABB 1SDA100651R1 is designed to be combined with a compatible XT5 breaking part to create a complete moulded-case circuit breaker assembly. Its four-pole design and reduced neutral setting make it particularly suitable for three-phase systems where neutral conductor protection is required at a lower current threshold than the phase conductors.
Typical Applications
- Industrial low-voltage distribution switchboards.
- Main and sub-distribution panels.
- Commercial building electrical distribution.
- Manufacturing and process-industry power systems.
- AC and DC distribution circuits.
- Four-wire systems requiring neutral conductor protection.
Technical Specifications
| Series | Tmax XT / TMA |
|---|---|
| ABB order code | 1SDA100651R1 |
| Product type | Thermomagnetic circuit-breaker trip unit |
| Compatible circuit breaker | ABB Tmax XT5 |
| Frame size | XT5 |
| Rated current | 320 A |
| Number of poles | 4 |
| Neutral protection | 50% of phase rating |
| Instantaneous magnetic trip range | 1600–3200 A |
| Protection technology | Thermal-magnetic |
| Current type | AC / DC |
| Product net width | 179 mm |
| Product net height | 179 mm |
| Product net depth | 223 mm |
| Product net weight | 1.05 kg |
| EAN / GTIN | 8056221007276 |
| ABB product group | T-Max XT 250 Range |
Frequently Asked Questions
What is the ABB 1SDA100651R1?
The ABB 1SDA100651R1 is a 320 A four-pole TMA thermomagnetic trip unit designed for use with compatible ABB Tmax XT5 moulded-case circuit breakers.
What is the magnetic trip range of the ABB 1SDA100651R1?
The instantaneous magnetic short-circuit trip setting range is 1600–3200 A.
What does InN=50%In mean?
It means the neutral pole protection is rated at 50% of the phase current, so the neutral protection level is lower than the 320 A phase rating.
Can the ABB 1SDA100651R1 be used on AC and DC systems?
Yes. The TMA 320-3200 XT5 four-pole release is specified for AC and DC applications when used with a compatible ABB Tmax XT5 breaking part.
Which circuit breaker is the 1SDA100651R1 designed for?
The 1SDA100651R1 is designed to be combined with a compatible ABB Tmax XT5 breaking part to form a complete moulded-case circuit breaker assembly.
Trusted Circuit Protection from ABB
ABB Tmax XT circuit breakers and TMA thermomagnetic releases provide robust overload and short-circuit protection for industrial and commercial low-voltage distribution systems, combining dependable mechanical protection technology with the flexible Tmax XT platform.
