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Siemens 3SU1000-4BF01-0AA0 RONIS Latching Key Switch

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ManufacturerSiemens

Part number3SU1000-4BF01-0AA0

Mounting Diameter 22.3 mm

Lock Number SB30

Positions 2 (O-I)

Actuation Type Latching (Maintained)

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22mm round mounting RONIS lock mechanism (SB30) 2 maintained switch positions 90° actuating angle Key removable in 'O' position Includes 2 keys

Product description

The Siemens 3SU1000-4BF01-0AA0 is a 22mm round key-operated switch featuring a robust plastic construction. It uses the RONIS lock system (key number SB30) and comes with two keys. This switch offers two maintained (latching) positions (O and I) with an actuating angle of 90° (10:30h/13:30h). The key can be removed from the 'O' position, providing secure operational control.

This latching key switch is ideal for applications requiring sustained activation or deactivation, such as equipment control, power isolation, and access control systems. The maintained contact ensures the selected position remains active until changed, offering reliable operational states in industrial environments.

Stanlo Automation, a veteran-owned distributor, offers the Siemens 3SU1000-4BF01-0AA0 for your industrial automation needs. Trust us for quality components and reliable service.

Technical specifications

Mounting Diameter	22.3 mm
Lock Number	SB30
Positions	2 (O-I)
Actuation Type	Latching (Maintained)
Actuating Angle	90° (10:30h/13:30h)
Key Removal	Position O
Material	Plastic
IP Rating	IP66/IP67/IP69K

Common applications

Equipment Control

Power Isolation

Access Control

Industrial Automation

Security Systems

Compatible systems

SIRIUS ACT 22mm System

Also known as

Siemens 3SU1 Latching Key Switch RONIS Key Switch 3SU1000-4BF01-0AA0 22mm Maintained Key Selector

Replaces / compatible with

This latching key switch is a direct replacement for other 22mm RONIS maintained key switches and similar lockable control components in Siemens systems.

Technical note

Expert tip

Requires separate contact blocks to be ordered and wired for operational circuit completion.

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Frequently asked questions

What is the difference between momentary and latching action for key switches like the 3SU1000-4BF01-0AA0?

A momentary key switch (like 3SU1000-4BC01-0AA0) only remains in its active position while the key is turned and held. A latching key switch (like 3SU1000-4BF01-0AA0) stays in the selected position (O or I) until the key is turned again to change it.