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Siemens 3SB3801-0EG3 Enclosed Emergency Stop Pushbutton Assembly

Siemens 3SB3801-0EG3 Enclosed Emergency Stop Pushbutton

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ManufacturerSiemens

Part number3SB3801-0EG3

Actuator Type Emergency Stop Mushroom Pushbutton

Head Diameter 40mm

Enclosure Material Plastic

Enclosure Top Color Yellow

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12-month warranty

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Veteran-owned

CAGE: 9NK75

40mm Red Emergency Stop Mushroom Button Protective Collar Yellow Plastic Enclosure Top Dual Normally Closed (NC) Contacts Rotate-to-unlatch Reset Screw Terminals

Product description

The Siemens 3SB3801-0EG3 is a fully enclosed command device featuring a 40mm red emergency stop mushroom pushbutton designed for 22mm round openings. It includes a yellow plastic enclosure top and a protective collar for added safety. This unit is equipped with two normally closed (NC) contacts, ensuring reliable operation in safety-critical circuits. Connections are made via screw terminals, and the reset function is activated by rotating the button. This product is phased out, with SIRIUS ACT 3SU1 as its successor.

This robust emergency stop assembly is essential for safeguarding personnel and machinery in industrial environments such as manufacturing facilities, automated production lines, and process plants. The dual NC contacts are a key feature for safety-related systems.

As a veteran-owned surplus parts distributor, Stanlo Automation is your reliable source for industrial automation components. We offer the Siemens 3SB3801-0EG3, providing a cost-effective solution for your replacement or repair needs, ensuring your operations continue without interruption.

Technical specifications

Actuator Type	Emergency Stop Mushroom Pushbutton
Head Diameter	40mm
Enclosure Material	Plastic
Enclosure Top Color	Yellow
Protective Collar	Yes
NC Contacts	2
Reset Mechanism	Rotate-to-unlatch
Terminal Type	Screw Terminal
Mounting Type	Floor Mounting
Cable Entry	2 x M20 (Top/Bottom)

Common applications

Machine Safety

Emergency Stop Systems

Industrial Control Panels

Manufacturing

Automated Production

Safety Circuits

Compatible systems

Industrial control panels and machinery requiring 22mm momentary pushbuttons with dual NC contacts for emergency stop applications.

Also known as

3SB38010EG3, Siemens Red E-Stop 2NC, 22mm Yellow Pushbutton

Replaces / compatible with

This is a phased-out Siemens product. The SIRIUS ACT 3SU1 series is the recommended successor, with a preferred successor type of 3SU1851-0NA00-2AA2.

Technical note

Expert tip

The dual NC contact configuration is often used in safety circuits to provide redundancy, ensuring the machine stops even if one contact fails.

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Frequently asked questions

What is the function of the protective collar on the Siemens 3SB3801-0EG3?

The protective collar on the Siemens 3SB3801-0EG3 mushroom pushbutton helps to prevent accidental activation of the emergency stop. It also provides a visual barrier, ensuring the button is only pressed intentionally in an emergency.