Emergency Stop Push Buttons

An emergency stop push button is a fail-safe control switch that provides both safety for the machinery and for the person using the machinery. The purpose of the emergency push button is to stop the machinery quickly when there is a risk of injury or the workflow requires stopping.

All machinery requires an emergency top button unless it would not reduce the risk or the machine is hand operated. The buttons are red as standard, often with a yellow background.

Types of Emergency Stops

The three most common emergency stops are:
•Push-pull: The button is pushed in to stop and released by pulling the button back.


•Twist release: The button is pushed in to stop and released by twisting the button.


•Key release: The button is pushed in to stop and only released with a key.



Where are they used?

Emergency stop push buttons can be found in any industry including industrial, commercial and public facilities. They are required to be clearly visible to anyone that is required to use them. It is also possible to have several emergency stop buttons on one machine depending on what part of the machine has to be stopped.

Some industries that require emergency stop push buttons are:
•Material handling


•Mining


•Food and beverage


•HVAC


•Amusements


•Marine


•Aviation



Foot and palm buttons have a large actuator surface and are also tamper-proof. They can be actuated by using the foot or hand and their simple design makes for a quick response. These types of emergency stop switches are ideal for harsh environment applications.

Position switches provide a link to the emergency stop actuating element. This type of emergency stop button is highly reliable plus quick and easy to fit. They can also be used in a wide range of applications.

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Description Price Mounting Type Reset Method Normal State Configuration Cutout Diameter Safety Contacts Auxiliary Contacts Supply Current Pole and Throw Configuration IP Rating Push Button Actuation Supply Voltage Head Style Illuminated Range
RS Stock No. 826-3861
Mfr. Part No.S1PY91KSS
BrandLovato
HK$521.06
Each
units
Surface Mount Key Reset NC 22.3mm - No - SPST IP66, IP67, IP69K - - Mushroom No -
RS Stock No. 874-1737
Mfr. Part No.3SU1000-1HA20-0AA0
BrandSiemens
HK$231.52
Each
units
Panel Mount Pull to Reset - 22mm - - - - - Latching - Mushroom No SIRIUS ACT
RS Stock No. 742-0757
Mfr. Part No.NDRZ50RT
BrandSchmersal
HK$485.68
Each
units
Panel Mount Key Reset - 22.3mm - No - - IP67, IP69K - - Round No -
RS Stock No. 690-6945
Mfr. Part No.84-5040.0040
BrandEAO
HK$320.76
Each
units
Panel Mount Twist to Reset 2NC 22.5mm - - 3 (ac) A, 5 (dc) A DPST IP65 - 240 V ac, 250 V dc Mushroom No -
RS Stock No. 259-924
Mfr. Part No.LBX13102
BrandBACO
HK$637.36
Each
units
Surface Mount Pull to Reset 2NC - - - - - IP66 - - Mushroom No -
RS Stock No. 832-6149
Mfr. Part No.HW1B-V4F10-R
BrandIdec
HK$297.01
Each
units
Panel Mount Twist to Reset NO 22mm - - 8 (dc) A, 10 (ac) A - IP65 - 440 V Round No -
RS Stock No. 810-3794
Mfr. Part No.216515 & M22-PV/K01
BrandEaton
HK$376.28
Each
units
Panel Mount Pull to Reset NC 22.5mm - - 15 mA - IP66, IP67, IP69K - 12 → 30 V ac Round No RMQ Titan
RS Stock No. 609-6417
Mfr. Part No.XB6AS8349B
HK$673.95
Each
units
Panel Mount Twist to Reset NO/2NC 16mm - - 3 (ac) A, 220 (dc) mA TPST IP65 - 240 V ac, 250 V dc Mushroom No Harmony
RS Stock No. 874-2314
Mfr. Part No.3SU1801-0NB00-2AC2
BrandSiemens
HK$494.82
Each
units
- - - - - - - - - - - - - -
RS Stock No. 815-2938
Mfr. Part No.XALK178H7
HK$1,257.62
Each
units
Surface Mount Twist to Reset - - - - - - IP66, IP67, IP69, IP69K - - Mushroom No -
RS Stock No. 795-1289
Mfr. Part No.XB5AT842
HK$203.30
Each
units
Panel Mount Pull to Reset NC 22.5mm - - 1.2 A SPST IP66, IP67, IP69, IP69K - 600 V ac Mushroom No Harmony
RS Stock No. 181-2850
Mfr. Part No.3SU1100-1HB20-1CJ0
BrandSiemens
HK$347.00
Each
units
Chassis Mount Rotate-to-Unlatch NC 22mm - 1 10 A SPST IP20, IP66, IP67, IP69 Latching 500 V ac/dc Mushroom - SIRIUS ACT
RS Stock No. 181-2851
Mfr. Part No.3SU1100-1HB20-1FJ0
BrandSiemens
HK$383.52
Each
units
Chassis Mount Rotate-to-Unlatch NO/NC 22.3mm - 3 10 A DPST IP20, IP66, IP67, IP69 Latching 500 V ac/dc Mushroom - SIRIUS ACT
RS Stock No. 181-2852
Mfr. Part No.3SU1100-1LB20-1PH0
BrandSiemens
HK$392.12
Each
units
Chassis Mount Rotate-to-Unlatch 2NC 22.3mm - 2 10 A DPST IP20, IP66, IP67, IP69 Latching 500 V ac/dc Mushroom - SIRIUS ACT
RS Stock No. 137-0020
Mfr. Part No.A02ESI3B102IX0+PEA01+QH22L57YC
BrandAPEM
HK$400.03
1 Pack of 1
Pack(s)
Panel Mount Turn to Release 2NC 22.7mm - - 8 (dc) A, 10 (ac) A DPST IP65 Pull/Twist to Release, Push to Shut Off 24 V dc, 240 V ac Mushroom No -
RS Stock No. 168-2546
Mfr. Part No.YW1B-V4E02R
BrandIdec
HK$123.77
Each
units
Panel Mount Pull to Turn 2NC 22mm 2 - 10 A - IP65 Push Lock 380 V Mushroom No -
RS Stock No. 832-5922
Mfr. Part No.FB1W-HW4B-V402R-EMO-2
BrandIdec
HK$749.54
Each
units
Surface Mount Twist to Reset 2NC - - - 8 (dc) A, 10 (ac) A - IP65 - 440 V Round No -
RS Stock No. 176-0186
Mfr. Part No.84-5140.0020
BrandEAO
HK$345.55
Each
units
Panel Mount Turn to Release 2NC 22.3mm - - 5 A 2P IP65 Turn Release 250 V ac/dc Round No -
RS Stock No. 194-2033
Mfr. Part No.84-5231.2B20
BrandEAO
HK$543.83
Each
units
Panel Mount - 1NC, 1NO 22.3mm - - 1.5 A SPST IP65, IP67 - 240 V ac Round Yes Compact
RS Stock No. 193-3763
Mfr. Part No.3SU1150-1HA20-3FH0
BrandSiemens
HK$398.56
Each
units
Front plate mounting Pull-To-Unlatch - - - - 10 A - IP66, IP67, IP69(IP69K) Latching 5 ... 500 V ac/dc - - -