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1SDA054659R1 ABB TMA 250-1250…2500 T4 3P
ABB 1SDA054659R1 TMA is a 250 A three-pole thermomagnetic protection release with an adjustable 1250-2500 A instantaneous magnetic trip setting for compatible SACE Tmax T4 moulded case circuit breaker assemblies.
£2,930.28
Why Choose the ABB TMA 250-1250...2500 T4 3P?
The ABB TMA 250-1250...2500 T4 3P, order code 1SDA054659R1, is a thermomagnetic protection release designed for compatible ABB SACE Tmax T4 moulded case circuit breaker assemblies. Rated at 250 A, this three-pole release provides thermal overload and magnetic short-circuit protection for AC and DC applications.
The TMA release combines a thermal protection element for sustained overload conditions with an adjustable magnetic element for short-circuit protection. For this 250 A version, the instantaneous magnetic trip setting I3 is adjustable from 1250–2500 A, allowing the short-circuit response to be matched to the requirements of the protected circuit.
The 1SDA054659R1 is specifically configured for three-pole Tmax T4 applications. It is supplied as a thermomagnetic protection release rather than a complete moulded case circuit breaker and is intended to be combined with a compatible ABB Tmax T4 breaking part and associated operating components.
Key Advantages
- Genuine ABB TMA thermomagnetic protection release.
- 250 A rated current for compatible Tmax T4 assemblies.
- Three-pole (3P) configuration.
- Provides both thermal overload and magnetic short-circuit protection.
- Adjustable instantaneous magnetic trip setting from 1250–2500 A.
- Suitable for compatible AC and DC circuit breaker applications.
- Designed specifically for the ABB SACE Tmax T4 platform.
- Thermomagnetic operation provides circuit protection without requiring an electronic trip unit.
Key Features
- ABB TMA series.
- Rated current: 250 A.
- Three-pole (3P) configuration.
- Designed for compatible ABB SACE Tmax T4 circuit breakers.
- Thermomagnetic protection technology.
- Thermal element for overload protection.
- Magnetic element for short-circuit protection.
- Instantaneous magnetic setting I3: 1250–2500 A.
- Suitable for compatible AC and DC applications.
- Supplied as a protection release rather than a complete MCCB.
Thermomagnetic Protection for ABB SACE Tmax T4
A thermomagnetic release combines two complementary protection principles. The thermal element responds to sustained overload conditions, while the magnetic element provides rapid operation when a high short-circuit current is detected. The associated Tmax T4 breaking unit then performs the physical interruption of the fault current.
For the 1SDA054659R1, the 250 A TMA release provides an adjustable instantaneous magnetic setting from 1250–2500 A. This adjustable range allows the magnetic trip threshold to be coordinated with the characteristics of compatible feeders, loads and downstream protective devices while retaining thermal overload protection.
Typical Applications
- Compatible ABB SACE Tmax T4 moulded case circuit breaker assemblies.
- Industrial electrical distribution systems.
- Three-phase feeder protection.
- Electrical switchboards and distribution panels.
- Industrial machinery and process equipment.
- Commercial power distribution systems.
- Compatible AC and DC circuit protection applications.
- OEM electrical distribution and control assemblies.
Technical Specifications
| Series | TMA / SACE Tmax T4 |
|---|---|
| ABB product group | 310511-T-Max T4 - T8 |
| Order code | 1SDA054659R1 |
| EAN | 8015644557645 |
| Product type | Thermomagnetic circuit breaker protection release |
| Compatible breaker platform | ABB SACE Tmax T4 |
| Rated current | 250 A |
| Number of poles | 3 |
| Release type | TMA thermomagnetic |
| Protection functions | Thermal overload and magnetic short-circuit protection |
| Instantaneous magnetic trip setting (I3) | 1250–2500 A |
| Application | AC and DC |
| Suitable for power circuit breaker | Yes |
| Complete circuit breaker | No |
Frequently Asked Questions
What is the ABB 1SDA054659R1?
The ABB 1SDA054659R1 is a TMA thermomagnetic protection release rated at 250 A and designed for compatible three-pole ABB SACE Tmax T4 moulded case circuit breaker assemblies.
Is the ABB 1SDA054659R1 a complete circuit breaker?
No. The 1SDA054659R1 is a thermomagnetic protection release rather than a complete MCCB. It is intended to be combined with a compatible ABB SACE Tmax T4 breaking part and associated circuit breaker components.
What protection does the ABB TMA 250 release provide?
The TMA release provides thermal overload protection for sustained overcurrent conditions and magnetic short-circuit protection for high-current faults.
What is the magnetic trip setting range of the ABB 1SDA054659R1?
The instantaneous magnetic trip setting I3 is adjustable from 1250–2500 A.
Can the ABB 1SDA054659R1 be used for AC and DC applications?
Yes. The TMA 250 release is designed for compatible AC and DC Tmax T4 circuit breaker applications, subject to the ratings and configuration of the complete circuit breaker assembly.
Trusted ABB Circuit Protection
ABB SACE Tmax thermomagnetic releases provide dependable overload and short-circuit protection for compatible moulded case circuit breaker assemblies, combining proven thermal protection with adjustable magnetic fault protection for industrial and commercial electrical distribution systems.
