Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
OTZM4A ABB Electrical Interlock for OT1000-2500E
ABB OTZM4A is an electrical interlock kit providing OFF-position locking for compatible ABB OT1000–2500E switch-disconnectors and designed for use with PDAL2 control coils.
£124.34
Why Choose the ABB OTZM4A Electrical Interlock?
The ABB OTZM4A is a genuine electrical interlock kit designed for compatible ABB OT1000–2500E switch-disconnectors. Identified by ABB order code 1SCA118510R1001, this interlock provides controlled locking of the switch in the OFF position and forms part of the ABB 311020-OT/OETL Accessories product group.
Designed for industrial switching and isolation systems, the OTZM4A enables compatible ABB switch-disconnectors to be electrically interlocked when used with an appropriate PDAL2 control coil. The system operates according to the closed-circuit principle, preventing an A-type interlocked switch from being turned to the ON position when the required control voltage is not applied to the coil.
The OTZM4A is specifically designed for ABB OT1000–2500E switch-disconnectors and has a unit weight of approximately 0.85 kg. Its purpose-designed construction provides a reliable interlocking solution for industrial switchboards, power distribution systems and installations where controlled switch operation is required.
Key Advantages
- Genuine ABB electrical interlock for compatible switching equipment.
- Designed specifically for ABB OT1000–2500E switch-disconnectors.
- Provides locking in the OFF position.
- Supports electrical interlocking when fitted with a compatible PDAL2 control coil.
- Uses the closed-circuit operating principle for controlled switch operation.
- Helps prevent the switch from being turned to the ON position when the interlock control conditions are not satisfied.
- Purpose-designed ABB construction supports dependable integration into industrial switchboards and distribution equipment.
Key Features
- ABB OTZM4A interlock.
- ABB order code 1SCA118510R1001.
- Part of the 311020-OT/OETL Accessories product group.
- Electrical interlock kit for compatible ABB switching equipment.
- Suitable for OT1000–2500E switch-disconnectors.
- OFF-position locking functionality.
- Designed to accept compatible PDAL2 electrical interlock coils.
- Closed-circuit interlocking principle.
- Unit weight of approximately 0.85 kg.
Controlled Electrical Interlocking for ABB Switch-Disconnectors
Electrical interlocking provides a means of controlling whether a switch-disconnector can be operated according to the state of an external control circuit. This can be useful in industrial power distribution systems where switch operation must be coordinated with other equipment, operating conditions or electrical control logic.
When a compatible PDAL2 coil is installed inside the OTZM4A housing, the switch can be electrically interlocked in the OFF position. The system uses the closed-circuit principle, meaning that without the required control voltage applied to the coil, an OT switch fitted with the A-type OTZM4A interlock cannot be turned to the ON position.
Typical Applications
- ABB OT1000–2500E switch-disconnector installations.
- Industrial electrical switchboards.
- Controlled electrical isolation systems.
- Low-voltage power distribution equipment.
- Industrial switching and interlocking systems.
- Process and manufacturing electrical installations.
- OEM switchgear and power distribution assemblies.
Technical Specifications
| Product group | 311020-OT/OETL Accessories |
|---|---|
| Order code | 1SCA118510R1001 |
| Product type | Electrical interlock kit |
| Suitable for | OT1000–2500E switch-disconnectors |
| Interlocking function | Locking in OFF position |
| Operating principle | Closed-circuit principle |
| Compatible coil family | PDAL2 |
| Product net width | 153 mm |
| Product net height | 112 mm |
| Product net depth / length | 279 mm |
| Weight | approx. 0.85 kg |
| EAN | 6417019502397 |
| Customs tariff number | 85389099 |
Frequently Asked Questions
What is the ABB OTZM4A used for?
The OTZM4A is an electrical interlock kit designed to provide OFF-position interlocking for compatible ABB OT1000–2500E switch-disconnectors.
Which ABB switches are compatible with the OTZM4A?
The OTZM4A is designed for ABB OT1000–2500E switch-disconnectors.
Which switch position does the ABB OTZM4A lock?
The OTZM4A is the A-type electrical interlock designed for locking in the OFF position.
Does the ABB OTZM4A use an electrical coil?
Yes. A compatible PDAL2 coil can be installed inside the interlock housing to provide electrically controlled interlocking. The required coil is selected according to the control voltage of the installation.
How does the ABB OTZM4A electrical interlock operate?
The OTZM4A uses a closed-circuit principle. When the required control voltage is not connected to the installed coil, a switch fitted with the A-type interlock cannot be turned to the ON position.
Designed for ABB OT Switch-Disconnectors
ABB OT/OETL accessories provide purpose-designed control, interlocking and installation solutions for compatible ABB switch-disconnectors, supporting dependable switching and controlled electrical isolation in industrial power distribution systems.
