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1SDA073845R1 ABB DLR E2.2 Mechanical Interlock
ABB 1SDA073845R1 is a DLR mechanical interlock for the ABB Emax 2 E2.2 withdrawable air circuit breaker, designed to lock racking-in and racking-out operation when the switchgear door is open.
£60.20
Why Choose the ABB 1SDA073845R1 DLR Mechanical Interlock?
The ABB 1SDA073845R1 is a DLR mechanical interlock for ABB Emax 2 withdrawable air circuit breakers. Its purpose is to lock the racking-in and racking-out operation of the circuit breaker's moving part when the switchgear door is open, providing an additional mechanical safeguard during breaker handling and maintenance procedures.
The DLR function helps control movement of the withdrawable breaker between its operating positions by preventing racking operations while the compartment door is open. This mechanical interlocking principle supports safer and more controlled switchgear operating sequences without relying on an electrical control signal.
ABB specifies order code 1SDA073845R1 as DLR E2.2 for the Emax 2 E2.2 frame. The accessory is supplied as a loose part and is designed specifically for integration with the mechanical operating system of compatible Emax 2 withdrawable air circuit breakers.
Key Advantages
- Dedicated DLR mechanical interlock for ABB Emax 2.
- Specified for the E2.2 air circuit breaker frame.
- Locks racking-in and racking-out operation when the switchgear door is open.
- Provides mechanical control without requiring an electrical supply.
- Supports controlled operation of withdrawable circuit breakers.
- Suitable for industrial switchgear maintenance and operating procedures.
Key Features
- ABB Emax 2 DLR accessory.
- Mechanical racking interlock.
- Designed for the E2.2 breaker frame.
- Used with withdrawable circuit breaker installations.
- Acts when the switchgear door is open.
- Restricts racking-in and racking-out movement of the breaker moving part.
- Loose-part supply.
- ABB order code 1SDA073845R1.
Mechanical Racking Interlock for Withdrawable Emax 2 Breakers
Withdrawable air circuit breakers can be moved between defined positions within their fixed parts through a mechanical racking mechanism. Controlling when this movement is permitted is an important part of switchgear operating procedures, particularly where access to the breaker compartment is involved.
The ABB 1SDA073845R1 DLR provides a mechanical lock for racking the moving part in or out when the door is open. This creates a direct mechanical relationship between door condition and breaker racking operation, helping ensure that the Emax 2 E2.2 is handled according to the intended switchgear operating sequence.
Typical Applications
- ABB Emax 2 E2.2 withdrawable air circuit breaker installations.
- Mechanical control of circuit breaker racking operations.
- Industrial low-voltage switchboards.
- Power distribution and protection systems.
- Switchgear maintenance and servicing procedures.
- Installations requiring mechanical interlocking between the compartment door and breaker racking mechanism.
Technical Specifications
| Series | Emax 2 |
|---|---|
| Order code | 1SDA073845R1 |
| Product type | Circuit breaker mechanical interlock |
| Accessory designation | DLR |
| Compatible breaker frame | E2.2 |
| Compatible series | ABB Emax 2 Air Circuit Breakers |
| Breaker execution | Withdrawable |
| Interlocking function | Racking-in / racking-out lock with door open |
| Operating principle | Mechanical interlocking |
| Configuration type | Loose or configurable |
| Supply type | Loose part |
| Standard | IEC |
| EAN | 8015644777784 |
| ABB product group | Emax2 Air Circuit Breaker |
Frequently Asked Questions
What is the ABB 1SDA073845R1 used for?
The ABB 1SDA073845R1 is a DLR mechanical interlock used to lock the racking-in and racking-out operation of a compatible ABB Emax 2 withdrawable air circuit breaker when the switchgear door is open.
Which ABB Emax 2 breaker frame is specified for the 1SDA073845R1?
The 1SDA073845R1 is specified as DLR E2.2 for the ABB Emax 2 E2.2 air circuit breaker frame.
What does the DLR function mean on the ABB 1SDA073845R1?
The DLR function is a mechanical racking interlock that prevents racking the circuit breaker's moving part in or out while the switchgear door is open.
Is the ABB 1SDA073845R1 intended for withdrawable circuit breakers?
Yes. The DLR accessory operates with the racking mechanism of a withdrawable Emax 2 air circuit breaker.
Does the ABB 1SDA073845R1 require an electrical supply?
No. The DLR is a mechanical interlocking accessory and performs its racking-control function mechanically rather than through an electrical supply or control signal.
How is the ABB 1SDA073845R1 supplied?
The DLR accessory is specified by ABB as a loose-part accessory for installation with the appropriate Emax 2 withdrawable breaker arrangement.
Trusted by Electrical and Switchgear Professionals Worldwide
ABB Emax 2 air circuit breakers and their dedicated mechanical interlocking accessories provide an integrated platform for low-voltage power distribution, helping switchboard builders and electrical engineers implement controlled breaker movement, dependable mechanical interlocking and structured switchgear operating procedures.
