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1SDA073742R1 ABB Toroid RC E2.2 4p, E4.2 for Differential Protection
ABB 1SDA073742R1 is an RC toroid designed to provide residual-current sensing for differential and earth leakage protection with compatible ABB Emax 2 E2.2 4-pole and E4.2 air circuit breakers.
£1,870.37
Why Choose the ABB 1SDA073742R1 Toroid RC for Differential Protection?
The ABB 1SDA073742R1 is a dedicated RC toroid for differential and residual-current protection designed for compatible ABB Emax 2 air circuit breakers. It provides the external residual-current sensing required by an appropriately configured Emax 2 protection system, helping detect earth leakage faults in low-voltage power distribution installations.
Designed for ABB Emax 2 E2.2 4-pole and E4.2 circuit breakers, the 1SDA073742R1 forms part of ABB's residual-current protection accessory range. The toroid monitors the conductors passing through it and provides a sensing signal to the associated protection system when a residual-current imbalance occurs.
ABB specifies the 1SDA073742R1 as Toroid RC E2.2 4p, E4.2. In an appropriate Emax 2 residual-current protection arrangement, the external toroid supports earth leakage protection over the 3–30 A range and is supplied as a loose accessory for integration into the switchgear installation.
Key Advantages
- Dedicated RC toroid for differential and residual-current protection.
- Designed for ABB Emax 2 E2.2 4-pole and E4.2 circuit breakers.
- Provides external residual-current sensing for compatible Emax 2 protection systems.
- Supports earth leakage protection in the 3–30 A range when used in the appropriate ABB protection configuration.
- Suitable for industrial low-voltage switchboards and power distribution systems.
- Purpose-designed ABB accessory for coordinated integration with the Emax 2 platform.
Key Features
- ABB Emax 2 RC toroid.
- Designed for differential / residual-current protection.
- Compatible with Emax 2 E2.2 4-pole circuit breakers.
- Compatible with Emax 2 E4.2 applications.
- External toroidal sensor for detecting residual-current imbalance.
- Used as part of an appropriately configured Emax 2 residual-current protection system.
- Supplied as a loose part.
- ABB order code 1SDA073742R1.
Residual-Current Sensing for Emax 2 Protection Systems
A residual-current toroid monitors the conductors passing through its aperture and detects an imbalance between their currents. Under normal operating conditions the vector sum of the currents is balanced; leakage current flowing outside the intended circuit path produces a residual signal that can be evaluated by the associated circuit breaker protection system.
For compatible ABB Emax 2 installations, the 1SDA073742R1 acts as the external toroid in a residual-current protection arrangement. ABB's Emax 2 system can provide earth leakage protection over the 3–30 A range when the required residual-current plug, external toroid, Ekip Supply and measurement-enabling components are combined with a compatible Ekip Touch LSIG trip unit.
Typical Applications
- ABB Emax 2 E2.2 4-pole air circuit breaker installations.
- ABB Emax 2 E4.2 air circuit breaker installations.
- Residual-current and differential protection systems.
- Industrial low-voltage switchboards.
- Power distribution and protection panels.
- Electrical installations requiring earth leakage monitoring and protection.
Technical Specifications
| Series | Emax 2 |
|---|---|
| Order code | 1SDA073742R1 |
| Product type | Residual-current / differential protection toroid |
| Accessory designation | Toroid RC |
| Protection function | Differential / residual-current protection |
| Residual-current protection range | 3–30 A when used in the appropriate Emax 2 protection configuration |
| Compatible breaker frame | E2.2 4-pole |
| Compatible series | ABB Emax 2 Air Circuit Breakers |
| Installation | External toroid / loose accessory |
| Application standard | IEC |
| Function | Residual-current sensing for differential protection |
| ABB product group | Emax2 Air Circuit Breaker |
Frequently Asked Questions
What is the ABB 1SDA073742R1 used for?
The ABB 1SDA073742R1 is an RC toroid used to provide residual-current sensing for differential and earth leakage protection in compatible ABB Emax 2 circuit breaker installations.
Which ABB circuit breakers are compatible with the 1SDA073742R1?
The 1SDA073742R1 is specified for ABB Emax 2 E2.2 4-pole and E4.2 circuit breaker applications.
What protection function does the ABB 1SDA073742R1 support?
It supports differential and residual-current protection by providing the external current sensing required by an appropriately configured Emax 2 protection system.
What residual-current protection range can an Emax 2 system provide with an RC toroid?
ABB specifies residual-current earth leakage protection over a 3–30 A range for appropriately configured Emax 2 E1.2, E2.2 and E4.2 systems using the required residual-current protection accessories.
Is the ABB 1SDA073742R1 supplied as a separate accessory?
Yes. ABB specifies the 1SDA073742R1 RC toroid as a loose part for integration into compatible Emax 2 residual-current protection systems.
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.
