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1SDA073741R1 ABB Toroid RC E1.2, E2.2 3p for Differential Protection
ABB 1SDA073741R1 is an RC toroidal current transformer designed to provide residual-current sensing for differential protection with compatible ABB Emax 2 E1.2 and E2.2 3-pole air circuit breakers.
£1,870.37
Why Choose the ABB 1SDA073741R1 Toroid RC for Differential Protection?
The ABB 1SDA073741R1 is a toroidal current transformer for RC differential protection designed for compatible ABB Emax 2 air circuit breakers. It provides the residual-current sensing input required for differential protection applications, supporting effective detection of earth leakage and residual current conditions within low-voltage power distribution systems.
Designed for ABB Emax 2 E1.2 and E2.2 circuit breakers, this RC toroid is suitable for E1.2 configurations and E2.2 3-pole breakers. ABB identifies the accessory as a toroid for differential protection, providing a dedicated sensing solution for Emax 2 installations equipped with the appropriate compatible protection equipment.
The 1SDA073741R1 is specified as Toroid RC E1.2, E2.2 3p and is supplied as an electrical protection accessory. It is particularly suited to industrial switchboards and power distribution systems where residual-current monitoring and differential protection are required as part of the circuit breaker protection scheme.
Key Advantages
- Dedicated toroid for RC differential protection.
- Designed for compatible ABB Emax 2 E1.2 and E2.2 circuit breakers.
- Supports E2.2 3-pole breaker configurations.
- Provides residual-current sensing for differential protection functions.
- Suitable for industrial low-voltage power distribution and switchgear systems.
- Purpose-designed ABB accessory for integration with compatible circuit breaker protection systems.
Key Features
- ABB Emax 2 RC toroid.
- Toroidal current transformer construction.
- Designed for differential / residual-current protection.
- Compatible with Emax 2 E1.2 and E2.2 3-pole applications.
- Provides residual-current sensor input for compatible protection arrangements.
- Suitable for integration into low-voltage switchboards.
- Supplied as a loose circuit breaker accessory.
- ABB order code 1SDA073741R1.
Residual-Current Sensing for Differential Protection
A toroidal current transformer used for differential protection monitors the conductors passing through its sensing aperture and detects an imbalance in their combined current. Under normal operating conditions the vector sum of the currents is effectively balanced; leakage to earth creates a residual current that can be detected by the associated protection system.
The ABB 1SDA073741R1 provides this sensing function for compatible Emax 2 installations. When incorporated into an appropriate ABB protection configuration, the RC toroid enables the circuit breaker protection system to monitor residual current and respond according to the configured differential-protection settings.
Typical Applications
- ABB Emax 2 E1.2 air circuit breaker installations.
- ABB Emax 2 E2.2 3-pole circuit breaker installations.
- Residual-current and differential protection systems.
- Industrial low-voltage switchboards.
- Power distribution and protection panels.
- Industrial electrical systems requiring earth-leakage monitoring.
Technical Specifications
| Series | Emax 2 |
|---|---|
| Order code | 1SDA073741R1 |
| Product type | Toroidal current transformer |
| Protection function | RC differential / residual-current protection |
| Compatible breaker series | ABB Emax 2 |
| Compatible breaker frames | E1.2 and E2.2 |
| E2.2 configuration | 3-pole |
| Installation | Loose accessory |
| Function | Residual-current sensing for differential protection |
| EAN | 8015644776749 |
| ABB product group | Emax2 Air Circuit Breaker |
Frequently Asked Questions
What is the ABB 1SDA073741R1 used for?
The ABB 1SDA073741R1 is a toroidal current transformer used as a residual-current sensing device for differential protection in compatible ABB circuit breaker installations.
Which ABB circuit breakers are compatible with the 1SDA073741R1?
The toroid is designed for compatible ABB Emax 2 E1.2 and E2.2 circuit breakers, including E2.2 3-pole configurations.
What type of protection does the ABB 1SDA073741R1 support?
It supports RC differential or residual-current protection by providing the residual-current sensing input required by the compatible protection system.
How does an RC toroid detect residual current?
The toroid monitors the combined current in the conductors passing through it. An imbalance caused by current flowing outside the intended circuit path produces a residual-current signal that can be evaluated by the associated protection system.
Is the ABB 1SDA073741R1 supplied as an Emax 2 accessory?
Yes. The 1SDA073741R1 is an ABB circuit breaker accessory supplied as a loose part for compatible differential-protection applications.
Trusted by Electrical and Switchgear Professionals Worldwide
ABB Emax 2 air circuit breakers and their dedicated protection accessories provide an integrated platform for low-voltage power distribution, helping switchboard builders and electrical engineers implement dependable circuit protection, residual-current monitoring and coordinated power system control.
