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Siemens 8UD1171-2AF21 Test Rotary Mechanism (Size 75x75)

Siemens 8UD1171-2AF21 test rotary mechanism for 3KD/3KF circuit breakers.

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ManufacturerSiemens

Part number8UD1171-2AF21

Type Standard

Tolerance Compensation Yes

Size 75x75 mm

Shaft 8x8 mm

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Veteran-owned

CAGE: 9NK75

Door-coupling rotary operation Standard configuration Tolerance compensation TEST-0-1 position indication Smaller 45mm handle Accessory for 3KD/3KF

Product description

The Siemens 8UD1171-2AF21 is a standard door-coupling rotary operating mechanism featuring tolerance compensation for ease of installation. It has a 75x75 mm mounting size, an 8x8 mm shaft, and a 300 mm shaft length. Uniquely, it is marked with TEST-0-1 positions and includes a 45 mm handle.

This complete unit is an accessory for Siemens 3KD size 1 and 2, and 3KF size 1 circuit breakers. The TEST-0-1 marking indicates specific operational modes, often used for testing or maintenance, allowing safe functional checks without full system engagement.

Stanlo Automation, a veteran-owned surplus distributor, offers the Siemens 8UD1171-2AF21. Rely on us for genuine and dependable components to ensure the precise functionality of your automation systems.

Technical specifications

Type	Standard
Tolerance Compensation	Yes
Size	75x75 mm
Shaft	8x8 mm
Shaft Length	300 mm
Positions	TEST-0-1
Handle Size	45 mm
Compatible Breakers	3KD size 1 and 2, 3KF size 1
Series	8UD11

Common applications

Control panel testing

Maintenance access

Industrial automation

Electrical switchgear

Machine control

Compatible systems

Siemens 3KD size 1 circuit breakers Siemens 3KD size 2 circuit breakers Siemens 3KF size 1 circuit breakers

Also known as

Siemens 8UD1171 test actuator 75x75mm test mechanism Siemens 3KD 3KF test rotary

Replaces / compatible with

This mechanism serves as an accessory for Siemens 3KD size 1 and 2, and 3KF size 1 circuit breakers, providing specialized TEST-0-1 operational modes.

Technical note

Expert tip

The TEST-0-1 functionality allows for diagnostic checks of the circuit breaker and its associated control circuits without compromising the main operational state (0).

What happens next?

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Frequently asked questions

What do the 'TEST-0-1' markings on the Siemens 8UD1171-2AF21 mean?

The 'TEST-0-1' markings on the Siemens 8UD1171-2AF21 indicate specific operational positions, commonly used for testing and maintenance routines of the associated 3KD or 3KF circuit breakers.