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1SDA054956R1 ABB RC223/4 T4 250 4P Type B Residual Current Release
ABB 1SDA054956R1 RC223/4 is a microprocessor-based Type B residual current release for four-pole SACE Tmax T4 circuit breakers up to 250 A with adjustable residual current and trip-delay settings.
£2,404.46
Why Choose the ABB RC223/4 T4 250 4P Residual Current Release?
The ABB 1SDA054956R1 is a high-performance RC223/4 electronic residual current release designed for use with four-pole ABB SACE Tmax T4 moulded case circuit breakers. Also identified as RC223/4 T4 250 4P and RC223/4 T4 250 4p F, it provides residual current protection for industrial low-voltage distribution systems where reliable earth-fault detection is required.
The RC223 is a microprocessor-based Type B residual current release that is installed below the compatible circuit breaker and operates through a trip coil. Its Type B functionality enables detection of residual currents containing alternating, pulsating and direct-current components, making it suitable for demanding electrical installations and equipment incorporating power electronics.
Designed for four-pole Tmax T4 circuit breakers with rated service currents up to 250 A, the RC223 supports a primary service voltage range of 110–500 V. Adjustable residual current trip thresholds from 0.03–1 A and selectable time-delay settings provide flexibility for coordinating earth-leakage protection within industrial distribution systems.
Key Advantages
- Advanced Type B residual current protection for ABB SACE Tmax T4 circuit breakers.
- Suitable for four-pole T4 installations up to 250 A.
- Microprocessor-based design for accurate residual current monitoring.
- Adjustable 0.03–1 A residual current trip settings.
- Selectable trip-delay settings for improved protection coordination.
- Designed to detect residual currents with AC, pulsating and DC components.
Key Features
- ABB RC223/4 residual current release.
- Type B residual current protection.
- Designed for ABB SACE Tmax T4 four-pole circuit breakers.
- 250 A maximum rated service current with T4.
- 110–500 V primary service voltage.
- Microprocessor-based electronic technology.
- Operates through an integrated trip-coil arrangement.
- Residual current trip settings of 0.03, 0.05, 0.1, 0.3, 0.5 and 1 A.
- Selectable instantaneous and delayed trip operation.
- Designed for installation below the compatible circuit breaker.
Advanced Type B Residual Current Protection
Residual current releases monitor an electrical installation for current flowing outside the intended conductors and initiate circuit breaker tripping when the configured residual current threshold is exceeded. This provides additional protection against earth faults and leakage currents that can present risks to equipment and electrical installations.
The ABB RC223 extends this functionality with Type B residual current detection and adjustable protection parameters. Its ability to respond to AC, pulsating and DC residual-current components makes it particularly valuable in modern industrial systems containing converters, drives and other electronic equipment capable of producing complex leakage-current waveforms.
Typical Applications
- Industrial low-voltage distribution systems.
- Four-pole ABB SACE Tmax T4 circuit breaker installations.
- Industrial machinery and automation panels.
- Power distribution systems containing electronic loads.
- Installations with variable speed drives and power converters.
- Switchboards requiring adjustable residual current protection.
Technical Specifications
| Series | SACE Tmax T |
|---|---|
| ABB order code | 1SDA054956R1 |
| Product type | Electronic residual current release |
| Residual current type | Type B |
| Technology | Microprocessor-based |
| Compatible circuit breaker | ABB SACE Tmax T4 |
| Number of poles | 4 |
| Maximum rated service current | 250 A |
| Primary service voltage | 110–500 V |
| Operating frequency | 50 / 60 Hz |
| Fault frequency settings | 0–400 / 0–700 / 0–1000 Hz |
| Rated residual current trip settings | 0.03 / 0.05 / 0.1 / 0.3 / 0.5 / 1 A |
| Time limit for non-trip | Instantaneous / 0 / 0.1 / 0.2 / 0.3 / 0.5 / 1 / 2 / 3 s |
| Trip-time tolerance | ±20% |
| Test operation range | 110–500 V |
| Power consumption | <10 W at 400 V AC |
| Mounting | Below circuit breaker |
| Action | Trip coil |
| ABB product group | 310511-T-Max T4 - T8 |
Frequently Asked Questions
What is the ABB 1SDA054956R1 used for?
The ABB 1SDA054956R1 is an RC223/4 Type B residual current release designed to provide residual current protection when combined with a compatible four-pole ABB SACE Tmax T4 circuit breaker.
What maximum current does the RC223/4 T4 support?
The RC223/4 is suitable for ABB Tmax T4 applications with a rated service current of up to 250 A.
What residual current settings are available?
The RC223 provides adjustable residual current trip settings of 0.03, 0.05, 0.1, 0.3, 0.5 and 1 A.
What voltage range does the ABB RC223 operate at?
The RC223 has a primary service voltage and test operation range of 110–500 V.
Is the ABB RC223 a Type B residual current release?
Yes. The RC223 is a Type B residual current release designed to detect residual currents including AC, pulsating and direct-current components.
Trusted ABB Residual Current Protection
ABB SACE Tmax residual current releases provide configurable earth-fault and leakage-current protection for industrial low-voltage distribution systems, helping integrate advanced protection functionality with compatible Tmax moulded case circuit breakers.
