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ABB MCCB 1sda054171r1-t4n 250 tmd 20-320 3 pole
ABB 1SDA054171R1 Tmax T4N 250 moulded case circuit breaker with TMD thermomagnetic trip unit, 20-320 A adjustable release range, three-pole fixed configuration and front terminals for low voltage power distribution.
Why Choose the ABB 1SDA054171R1 Tmax T4N 250 MCCB?
The ABB 1SDA054171R1 is a dependable Tmax T4N moulded case circuit breaker (MCCB) designed to provide reliable protection for low voltage electrical distribution systems. As part of the proven ABB SACE Tmax T series, this three-pole breaker is built for industrial, commercial and OEM applications where safe circuit isolation, overload protection and short-circuit protection are essential.
This MCCB is fitted with a TMD thermomagnetic trip unit, providing reliable thermal overload and magnetic short-circuit protection. Its adjustable protection range makes it suitable for a wide variety of low voltage applications, helping protect electrical equipment, feeders and distribution circuits from damaging fault conditions.
With a 20–320 A adjustable trip range, T4N 250 frame, three-pole fixed configuration and front terminal connections, the ABB 1SDA054171R1 is well suited for switchboards, distribution panels, motor control centres and industrial power systems requiring robust circuit protection.
Key Advantages
- Reliable ABB Tmax T4N moulded case circuit breaker.
- TMD thermomagnetic release for overload and short-circuit protection.
- 20–320 A adjustable protection range for flexible system design.
- Three-pole fixed design with front terminal connections.
- Suitable for industrial, commercial and OEM low voltage applications.
- Designed for switchboards, distribution panels and machinery control systems.
Key Features
- ABB SACE Tmax T series.
- T4N 250 MCCB frame.
- 3-pole fixed circuit breaker.
- TMD thermomagnetic trip unit.
- 20–320 A adjustable release range.
- Front terminal connections.
- Rated operational voltage up to 690 V AC.
- Designed for low voltage circuit protection and power distribution.
Thermomagnetic Protection for Low Voltage Systems
Moulded case circuit breakers such as the ABB Tmax T4N help protect electrical installations by disconnecting circuits during overload and short-circuit conditions. The TMD thermomagnetic release combines thermal protection for overloads with magnetic protection for short-circuit faults, delivering dependable protection for a wide range of electrical systems.
The ABB 1SDA054171R1 combines robust construction, compact dimensions and proven ABB engineering, making it a practical choice for switchgear assemblies, distribution boards and industrial installations requiring reliable circuit protection.
Typical Applications
- Industrial switchboards and panel boards.
- Commercial electrical distribution systems.
- Motor control centres.
- Feeder and transformer protection.
- Generator and backup power systems.
- OEM machinery and automation panels.
- Infrastructure and utilities installations.
Technical Specifications
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| Current | 20 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole | |
| Device Type | MCCB | |
| Breaking Capacity | 36 kA | |
| Trip Unit | Thermal-magnetic | |
| Manufacturer | ABB | |
| Series | SACE Tmax T | |
| Model | T4N 250 | |
| Part number | 1SDA054171R1 | |
| Product type | Moulded case circuit breaker (MCCB) | |
| Rated current / release setting | 20–320 A | |
| Frame size | 250 A | |
| Rated operational voltage | 690 V AC | |
| Number of poles | 3 | |
| Mounting type | Fixed | |
| Terminal type | Front terminals | |
| Trip unit | TMD thermomagnetic release | |
| Breaking capacity | 36 kA at 415 V AC | |
| Dimensions (H × W × D) | approx. 205 × 105 × 103.5 mm | |
| EAN | 8015644552718 | |
| Standards | IEC 60947 |
Frequently Asked Questions
What is the ABB 1SDA054171R1 used for?
The ABB 1SDA054171R1 is used to protect low voltage electrical circuits against overloads and short circuits in industrial, commercial and OEM power distribution systems.
What trip unit is fitted to the ABB 1SDA054171R1?
It is fitted with a TMD thermomagnetic trip unit, providing thermal overload and magnetic short-circuit protection.
How many poles does this breaker have?
The ABB 1SDA054171R1 is a 3-pole fixed moulded case circuit breaker.
What terminal type does this MCCB use?
This breaker is supplied with front terminal connections for straightforward panel and switchboard installation.
Where is this MCCB typically installed?
It is commonly installed in switchboards, distribution panels, motor control centres and industrial electrical systems requiring reliable circuit protection.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax moulded case circuit breakers are widely trusted by panel builders, electrical contractors and industrial engineers for dependable low voltage circuit protection, robust performance and reliable operation in demanding power distribution applications.
