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1SDA054671R1 ABB TMA 125-1250 T4 4p InN=100%In Thermomagnetic Trip Unit
ABB TMA 125-1250 T4 4p InN=100%In thermomagnetic trip unit with 125 A rated current and fully rated neutral protection for Tmax T4 circuit breakers.
£2,714.35
Why Choose the ABB TMA 125-1250 T4 4p InN=100%In Thermomagnetic Trip Unit?
The ABB TMA 125-1250 T4 4p InN=100%In is a reliable thermomagnetic trip unit designed for ABB SACE Tmax T4 moulded case circuit breakers, providing dependable overload and short-circuit protection for low-voltage electrical distribution systems. As part of the ABB Tmax T protection accessory range, it combines thermal and magnetic protection technology with a fully rated neutral configuration for enhanced four-pole circuit protection. :chatgpt-content-reference{index="0"}
This trip unit provides protection through a thermal element for overload conditions and a magnetic element for short-circuit faults. The TMA release design offers a robust and straightforward protection solution for industrial and commercial installations where reliable circuit breaker operation and long service life are essential. :chatgpt-content-reference{index="1"}
With a rated current of 125 A, a four-pole configuration and a fully rated neutral, the ABB TMA 125-1250 T4 4p InN=100%In is suitable for ABB Tmax T4 circuit breakers used in AC and DC low-voltage distribution applications. :chatgpt-content-reference{index="2"}
Key Advantages
- Thermomagnetic protection technology for ABB Tmax T4 moulded case circuit breakers.
- 125 A rated current suitable for industrial and commercial distribution systems. :chatgpt-content-reference{index="3"}
- Magnetic trip adjustment range of 625–1250 A for short-circuit protection. :chatgpt-content-reference{index="4"}
- Fully rated neutral protection for four-pole installations. :chatgpt-content-reference{index="5"}
- Provides dependable overload and fault current protection.
- Designed for seamless integration with ABB SACE Tmax T4 circuit breaker systems. :chatgpt-content-reference{index="6"}
Key Features
- ABB TMA 125-1250 T4 4p InN=100%In thermomagnetic trip unit.
- Suitable for ABB SACE Tmax T4 circuit breakers. :chatgpt-content-reference{index="7"}
- Four-pole (4P) configuration. :chatgpt-content-reference{index="8"}
- Rated current In: 125 A. :chatgpt-content-reference{index="9"}
- Fully rated neutral: 100% InN. :chatgpt-content-reference{index="10"}
- Magnetic trip range I3: 625–1250 A. :chatgpt-content-reference{index="11"}
- Thermal overload protection.
- Magnetic short-circuit protection.
- Suitable for AC/DC applications. :chatgpt-content-reference{index="12"}
Reliable Circuit Protection for Low-Voltage Distribution
Thermomagnetic trip units such as the ABB TMA 125-1250 T4 4p InN=100%In provide dependable protection by responding to different types of electrical faults. The thermal mechanism protects equipment and conductors from prolonged overload conditions, while the magnetic mechanism provides rapid interruption during short-circuit events.
The fully rated neutral configuration makes this release suitable for four-pole distribution systems requiring consistent protection across phase and neutral conductors. Installed within ABB Tmax T4 moulded case circuit breakers, it provides a durable solution for industrial switchboards, distribution panels and electrical infrastructure. :chatgpt-content-reference{index="13"}
Typical Applications
- Industrial power distribution boards.
- Low-voltage switchgear assemblies.
- Commercial electrical installations.
- Machinery and equipment protection systems.
- Three-phase distribution systems with neutral protection.
- Electrical infrastructure requiring reliable overcurrent protection.
Technical Specifications
| Series | Tmax T |
|---|---|
| Order code | 1SDA054671R1 |
| Product type | Thermomagnetic trip unit |
| Suitable for | ABB SACE Tmax T4 circuit breakers |
| Release type | TMA thermomagnetic release |
| Rated current (In) | 125 A |
| Magnetic trip setting (I3) | 625–1250 A |
| Number of poles | 4P |
| Neutral protection | Fully rated neutral, 100% InN |
| Current type | AC/DC |
| Standards | IEC |
| Configuration type | Loose or configurable |
| Product category | Accessories for Tmax T moulded case circuit breakers |
| Product net weight | approx. 1 kg |
Frequently Asked Questions
What is the ABB TMA 125-1250 T4 4p InN=100%In used for?
This thermomagnetic trip unit provides overload and short-circuit protection for ABB Tmax T4 moulded case circuit breakers.
Which circuit breakers is this trip unit compatible with?
The unit is designed for ABB SACE Tmax T4 circuit breakers.
What is the rated current of this trip unit?
The ABB TMA 125-1250 T4 4p InN=100%In has a rated current of 125 A.
What is the magnetic trip adjustment range?
The magnetic trip range is 625–1250 A.
What does fully rated neutral 100% InN mean?
The neutral pole is rated at 100% of the phase current rating, providing full neutral protection in four-pole installations.
Trusted by Industrial Power Engineers Worldwide
ABB Tmax T thermomagnetic trip units are widely used in low-voltage electrical systems to deliver dependable circuit protection, robust performance and reliable integration with ABB moulded case circuit breakers.
