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Siemens 3SU1100-4BL11-1NA0 RONIS Key-Operated Switch

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ManufacturerSiemens

Part number3SU1100-4BL11-1NA0

Type Key-operated switch

Series 3SU1

Actuator Type RONIS key

Mount Size 22 mm

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Veteran-owned

CAGE: 9NK75

RONIS key operation 22mm round mounting 3 switch positions Latching mechanism 2 NO contacts SB30 lock with 2 keys

Product description

The Siemens 3SU1100-4BL11-1NA0 is a RONIS key-operated switch from the 3SU1 series, designed for robust industrial applications. This 22mm round plastic switch offers three positions (I-O-II) with a latching function and key removal available in all three positions. It includes a holder, two Normally Open (NO) contacts, and screw terminals. The lock number is SB30, and it comes with two keys, with compatibility for special locks SB31, 421, and 455.

This three-position key switch is suitable for complex control sequences and secure operation in environments such as manufacturing plants, automated systems, and access control scenarios. The durable construction and reliable RONIS locking mechanism ensure long-term performance.

Stanlo Automation, a veteran-owned surplus parts distributor, provides access to the Siemens 3SU1100-4BL11-1NA0. Secure your essential automation components from a trusted source for uninterrupted operations.

Technical specifications

Type	Key-operated switch
Series	3SU1
Actuator Type	RONIS key
Mount Size	22 mm
Shape	Round
Material	Plastic
Lock Number	SB30
Positions	3 (I-O-II)
Operation	Latching
Key Removal	I+O+II
Contacts	2 NO
Terminals	Screw

Common applications

Multi-function control panels

Industrial automation

Machine safety

Access control systems

Process control

Plant operations

Also known as

Siemens 3SU1 three position key switch 3SU11004BL111NA0 Siemens round key switch

Technical note

Expert tip

The latching mechanism ensures that the switch position is maintained until intentionally changed, preventing accidental state changes.

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Frequently asked questions

What is the key removal functionality of the Siemens 3SU1100-4BL11-1NA0?

The Siemens 3SU1100-4BL11-1NA0 key-operated switch allows key removal in all three positions: I, O, and II. This feature enhances operational security by ensuring the key is not left in the switch unnecessarily.