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Red 22mm emergency stop mushroom button metal bezel plastic head 1NC screw terminals IP67 IP69K

SIEMENS

SIEMENS 3SU1150-1HB20-1CG0 Emergency Stop Push Button 22mm Red 1NC

SKU CH-JCVF-G3QQV

22 mm maintained-action emergency stop push button with 40 mm red mushroom head, 1NC contact rated 10 A at 600 V AC, IP67 and IP69K sealed

  • 22 mm mounting fits standard panels
  • 40 mm mushroom head enables quick actuation
  • 1 NC contact rated 10 A at 600 V AC breaks power reliably
  • IP67 and IP69K sealing withstands wash-down environments
  • NEMA 1, 12, 2, 3, 3R, 4, 4X ratings cover indoor and outdoor use

22 mm Emergency Stop Push Button

The SIEMENS 3SU1150-1HB20-1CG0 is a maintained-action emergency stop device with a 40 mm red mushroom head. It provides a single normally-closed contact for safety circuits in industrial machinery and control panels. The plastic operator head and metal bezel suit standard 22 mm panel cut-outs. It carries NEMA ratings 1, 12, 2, 3, 3R, 4 and 4X plus IP67 and IP69K for harsh environments.

Panel Mounting and Wiring

Installation uses a standard 22 mm cut-out with screw terminals for secure wire connection. The maintained push-pull action requires deliberate reset after activation, reducing accidental restarts. Common issues include overtightening the mounting nut, which can crack the plastic head, and insufficient torque on screw terminals leading to loose contacts under vibration. The legend "Emergency Stop" is moulded on the head for clear identification.

Contact Rating and Environmental Headroom

The contact is rated at 10 A at 600 V AC and 1 A at 600 V DC, matching NEMA designation A600/R300 for pilot-duty loads. It handles typical safety-relay coils and contactor circuits comfortably. The IP67 and IP69K ratings withstand high-pressure wash-down and temporary immersion, suitable for food-processing or outdoor equipment. Circuits exceeding 10 A AC or 1 A DC require an interposing relay; the single 1NC contact provides no redundant channel for safety-category architectures demanding dual contacts.

Highlights

  • 22 mm mounting fits standard panels
  • 40 mm mushroom head enables quick actuation
  • 1 NC contact rated 10 A at 600 V AC breaks power reliably
  • IP67 and IP69K sealing withstands wash-down environments
  • NEMA 1, 12, 2, 3, 3R, 4, 4X ratings cover indoor and outdoor use

Specifications

BrandSIEMENS

Questions about this item

How do I verify the emergency stop push button is working correctly after installation?

Press the 40 mm red mushroom head to confirm maintained action locks it in place, then check that the 1NC contact opens the circuit using a continuity tester.

What components come with the 3SU1150-1HB20-1CG0 and what must I source separately?

The unit includes the 22 mm metal-bezel operator with 1NC screw terminal block; mounting hardware and legend plate are not included.

Which NEMA and IP ratings suit my environment for this emergency stop button?

Choose this model when you need NEMA 1, 12, 2, 3, 3R, 4, 4X plus IP67 and IP69K protection for wash-down or outdoor use.

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