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Siemens 3SB3500-4PD41 22mm Key Operated Switch

Siemens 3SB3500-4PD41 22mm metal key-operated latching switch.

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ManufacturerSiemens

Part number3SB3500-4PD41

Actuator Type Key-Operated Switch

Diameter 22mm

Material Metal

Positions 3 (I-O-II)

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22mm metal actuator Key-operated control 3 switch positions (I-O-II) Latching mechanism Supplied with 2 keys "Remove in position" function

Product description

The Siemens 3SB3500-4PD41 is a 22mm metal round actuator featuring a key-operated switch with three switch positions: I-O-II. It is a latching type switch, supplied with two keys, and offers a "remove in position I+II" function. This unit includes a holder and is designed for secure access control.

This key-operated switch is commonly used in industrial control panels, safety systems, and access control applications where authorized operation is critical, such as on machinery, electrical cabinets, and building management systems.

Stanlo Automation, a veteran-owned surplus parts distributor, carries the Siemens 3SB3500-4PD41. We provide reliable access to surplus industrial automation components, helping you maintain operational continuity.

Technical specifications

Actuator Type	Key-Operated Switch
Diameter	22mm
Material	Metal
Positions	3 (I-O-II)
Operation	Latching
Keys	2 included
Function	Remove in Position I+II
Series	SIRIUS ACT 3SU1

Common applications

Industrial control panels

Safety interlocks

Access control systems

Machine control

Electrical cabinet security

Building automation

OEM machinery

Compatible systems

22mm mounting systems Siemens control panels SIRIUS ACT 3SU1 actuator systems

Also known as

Siemens 3SB3 Key Switch 22mm Metal Key Switch SIRIUS ACT Key Operator

Replaces / compatible with

This phased-out product's preferred successor consists of Siemens 3SU1050-5BL41-0AA0 (actuator) + 3SU1550-0AA10-0AA0 (holder). It replaces older Siemens 3SB3 series key-operated switches.

Technical note

Expert tip

The "remove in position I+II" feature on the 3SB3500-4PD41 ensures the key can only be removed when the switch is in either the 'I' or 'II' position, enhancing operational security.

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Frequently asked questions

How many positions does the Siemens 3SB3500-4PD41 key switch offer?

The Siemens 3SB3500-4PD41 key switch provides three distinct positions: I (On), O (Off), and II (On). It is a latching type switch, meaning it remains in the selected position until manually changed.