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Siemens 3LD9243-1B Rotary Operating Mechanism for 3LD2/3LD5 Switches

Siemens 3LD9243-1B black rotary selector switch mechanism.

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ManufacturerSiemens

Part number3LD9243-1B

Type Rotary operating mechanism, selector switch

Color Black

Mounting Four-hole front mounting

For Use With Siemens 3LD23/24 (160A-250A, 3P/3P+N) and 3LD5 UL (100A-150A) main and EMERGENCY-OFF switches

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Selector switch functionality Robust black knob Four-hole front mounting For high current 3LD2 and 3LD5 UL switches Reliable manual operation

Product description

The Siemens 3LD9243-1B is a selector switch rotary operating mechanism featuring a black knob for four-hole front mounting. This accessory is designed for use with higher current Siemens main and EMERGENCY-OFF switches, specifically the 3LD23/24 series for 160 A to 250 A (3P and 3P+N) and the 3LD5 UL series for 100 A to 150 A.

This rotary mechanism provides a clear and robust way to operate main and emergency disconnect switches, often used in heavy industrial applications, power distribution, and motor control centers where reliable manual operation and emergency shutdown are critical.

Stanlo Automation, your trusted veteran-owned source for surplus industrial automation parts, offers the Siemens 3LD9243-1B. Secure this essential operating mechanism to maintain or upgrade your Siemens 3LD2 or 3LD5 UL switchgear.

Technical specifications

Type	Rotary operating mechanism, selector switch
Color	Black
Mounting	Four-hole front mounting
For Use With	Siemens 3LD23/24 (160A-250A, 3P/3P+N) and 3LD5 UL (100A-150A) main and EMERGENCY-OFF switches

Common applications

Industrial power distribution

Motor control centers

Heavy machinery

Manufacturing plants

Switchgear operation

Compatible systems

Siemens 3LD23/24 (160A-250A, 3P/3P+N) Siemens 3LD5 UL (100A-150A)

Also known as

Siemens 3LD2 selector switch Siemens 3LD5 UL operator 3LD9243-1B mechanism Black rotary switch actuator

Replaces / compatible with

This rotary operating mechanism is an accessory for Siemens 3LD23/24 (160-250A) and 3LD5 UL (100-150A) switches. It provides the external control interface for these disconnectors.

Technical note

Expert tip

Ensure the correct switch body is selected for the current rating (160-250A for 3LD2, 100-150A for 3LD5 UL) when using this rotary mechanism.

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Frequently asked questions

What Siemens switches are compatible with the 3LD9243-1B rotary operating mechanism?

The Siemens 3LD9243-1B is compatible with Siemens 3LD23/24 main and EMERGENCY-OFF switches rated for 160 A to 250 A (3P and 3P+N), as well as the 3LD5 UL main and EMERGENCY-OFF switches rated for 100 A to 150 A.