OSZT3A ABB Electrical Interlock for OS600–OS800

OSZT3A ABB Electrical Interlock for OS600–OS800

ABB OSZT3A 1SCA106535R1001 is an electrical interlock and mechanism interlock kit designed for OFF-position interlocking of compatible ABB OS600–OS800 switch fuse equipment.

SKU: OSZT3AAlt SKU: 1SCA106535R1001MPN: OSZT3A
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Why Choose the ABB OSZT3A Electrical Interlock?

The ABB OSZT3A, order number 1SCA106535R1001, is an electrical interlock for OFF-position interlocking designed for compatible ABB OS600–OS800 switch fuse equipment. Part of the ABB 311031-OS/OESA Accessories product group, it provides an interlocking solution for applications where the switch must be prevented from being operated to the ON position under defined control conditions.

The OSZT3A combines a mechanism interlock kit with provision for electrical interlocking. ABB specifies the A-type interlock for interlocking in the OFF position, making it suitable for industrial switching systems where controlled operation of OS600–OS800 switch fuses is required.

For electrical operation, a compatible coil can be installed inside the interlock housing. ABB specifies a closed-circuit operating principle: when control voltage is not applied to the coil, equipment fitted with an A-type interlock cannot be turned to the ON position. The OSZT3A has an approximate net weight of 1.2 kg.

Key Advantages

  • Purpose-designed electrical interlock for ABB OS600–OS800 equipment.
  • Provides interlocking in the OFF position.
  • Supports electrical interlocking through installation of a compatible control coil.
  • Uses a closed-circuit interlocking principle for controlled switch operation.
  • Mechanism-mounted design provides manufacturer-matched integration with compatible ABB switch fuses.
  • Part of the ABB 311031-OS/OESA Accessories product group.

Key Features

  • ABB OSZT3A electrical interlock.
  • ABB order number 1SCA106535R1001.
  • Designed for ABB OS600–OS800 switch fuse equipment.
  • OFF-position interlocking.
  • Mechanism interlock kit with electrical interlocking capability.
  • Compatible with appropriate ABB interlock coils.
  • Closed-circuit operating principle when electrically interlocked.
  • Supports padlock-based OFF-position interlocking.
  • Maximum lock bail diameter of 8 mm.
  • Approximate net weight of 1.2 kg.

Controlled OFF-Position Interlocking for ABB OS600–OS800 Equipment

Electrical interlocks are used in switching installations where operation must be dependent on an external control condition. With a suitable coil installed in the OSZT3A housing, the closed-circuit principle prevents an A-type interlocked switch from being moved to the ON position when the required control voltage is absent.

The ABB OSZT3A is specifically matched to compatible OS600–OS800 switch fuse equipment and can also support mechanical OFF-position locking. This makes it suitable for switchboards, industrial power distribution systems and control assemblies requiring dependable manufacturer-matched interlocking of high-current switching equipment.

Typical Applications

  • ABB OS600–OS800 switch fuse installations.
  • Electrically interlocked switching systems.
  • Industrial low-voltage distribution systems.
  • Electrical switchboards and distribution panels.
  • Machinery and process power isolation systems.
  • Industrial control and power distribution assemblies.
  • OEM panel building and electrical system integration.

Technical Specifications

Product group 311031-OS/OESA Accessories
Order code OSZT3A
ABB order number 1SCA106535R1001
Product type Electrical interlock / mechanism interlock kit
Compatible equipment OS600–OS800
Interlocking position OFF
Electrical operating principle Closed circuit
Maximum lock bail diameter 8 mm
Mounting type Mechanism mounted
Product net width approx. 160 mm
Product net height approx. 96 mm
Product net depth approx. 236 mm
Weight approx. 1.2 kg
Quantity 1 pc

Frequently Asked Questions

What is the ABB OSZT3A used for?

The ABB OSZT3A is an electrical interlock for OFF-position interlocking designed for compatible ABB OS600–OS800 switch fuse equipment.

What is the ABB order number for the OSZT3A?

The ABB order number for the OSZT3A electrical interlock is 1SCA106535R1001.

Which ABB equipment is compatible with the OSZT3A?

The OSZT3A is designed for compatible ABB OS600–OS800 switch fuse equipment.

In which position does the OSZT3A provide interlocking?

The OSZT3A provides interlocking in the OFF position, preventing compatible equipment from being switched ON when the interlocking condition is active.

How does the ABB OSZT3A electrical interlock operate?

With a compatible coil installed, the OSZT3A uses a closed-circuit principle. When control voltage is not connected to the coil, the A-type interlock prevents the compatible switch from being turned to the ON position.

ABB Engineered Switching Accessories

ABB OS/OESA accessories are engineered for integration with compatible ABB low-voltage switching equipment, helping panel builders and electrical engineers implement dependable switching, isolation and interlocking functions in industrial electrical systems.