£44.28

About as cheap as it gets — within 5% of the all-time low it hit 3 months ago.

£44 today · all-time low £43 (Jul 2026) · usually the usual

Schneider Electric ZB4BS944 Harmony Emergency Stop Head

View at Amazon

Price History & Forecast

Grey patches = out of stock. Cheaper = lower on the chart. Hover for exact prices.

Last 37 days · 37 data points (no recent data)

Historical
Generating forecast…
£44.39 £43.07 £43.36 £43.65 £43.93 £44.22 £44.51 19 July 2026 28 July 2026 06 August 2026 15 August 2026 24 August 2026
View at Amazon ↗

Red, ZB4BS944

Price data last checked 54 day(s) ago - refreshing...

NEW HERE?

Amazon shows you one price. We show you all of them.

Tosheroon watches Amazon prices so you don't have to. Every product on Amazon has a price history — we make it visible. Set the price you'd actually pay, and we'll email you the second it gets there. No app, no account, one email.

WHAT'S ON THIS PAGE

↑ Price chart
when this has been cheap or pricey
↑ Forecast
where the price is heading next
↓ Statistics
all-time high & low, recent range
↑ Price alert
name your number, we'll email you

Price Distribution

Price distribution over 37 days • 2 price levels

Days at Price
Current Price
1 day 36 days · current 0 9 18 27 36 £43 £44 Days at Price

Price Analysis

Most common price: £44 (36 days, 97.3%)

Price range: £43 - £44

Price levels: 2 different prices over 37 days

Description

Ensure industrial safety with the Schneider Electric Harmony XB4 emergency stop head. This ZB4BS944 model features a prominent 40mm red mushroom head, making it easy to identify from a distance. Designed for reliability, it utilizes a latched key-to-release mechanism (key no.455) for secure operation. The unit is built with a metal bezel and fits into standard 22mm diameter cut-outs, allowing for straightforward installation. With its robust construction, this component provides dependable performance in demanding environments. It is designed for flexibility and ease of use, combining a snap-fit head and body that can be tightened with a single screw for secure mounting.

Key Features

The Schneider Electric ZB4BS944 features a 40mm red mushroom head that is clearly distinguishable visually at a distance.

This emergency stop head uses a latched key-to-release mechanism with key no.455 for controlled resetting.

Built with a metal bezel and robust construction, this component is designed to provide flexibility in industrial applications.

Installation is simple with a snap-fit head and body design that can be tightened using a single screw.

The unit fits into standard 22mm diameter cut-outs and connects easily with simple screw-clamp connections.

Engineered for durability, this head is impact resistant, dust resistant, water resistant, and vibration resistant with IP66, IP67, IP69, and IP69K ratings.

Product Specifications

Barcode

No barcode data available

Similar Products You Might Like

Schneider Electric ZB4BT2 Harmony 40mm Mushroom Pushbutton
98% match

Schneider Electric ZB4BT2 Harmony 40mm Mushroom Pushbutton

Schneider Electric

£30.31 25 Aug 2026
Schneider Electric, Harmony, ZB4BG7, Key Switch
97% match

Schneider Electric, Harmony, ZB4BG7, Key Switch

Schneider Electric

£36.95 03 Oct 2026
Schneider Electric Illuminated push button, Harmony XB5, plastic, flush, green, 22mm, universal LED, plain lens, 1NO + 1NC, 110...120V AC
97% match

Schneider Electric Illuminated push button, Harmony XB5, plastic, flush, green, 22mm, universal LED, plain lens, 1NO + 1NC, 110...120V AC

Schneider Electric

£34.13 26 Aug 2026
Schneider Electric XB5AT845 Emergency Stop Push Button
97% match

Schneider Electric XB5AT845 Emergency Stop Push Button

Schneider Electric

£53.07 26 Aug 2026
Schneider Electric XB4BS8444 Emergency Stop Push Button
97% match

Schneider Electric XB4BS8444 Emergency Stop Push Button

Schneider Electric

£46.55 24 Aug 2026
Schneider Electric Illuminated push button, Harmony XB5, plastic, orange flush, 22mm, universal LED, plain lens, 1NO + 1NC, 230...240V AC
96% match

Schneider Electric Illuminated push button, Harmony XB5, plastic, orange flush, 22mm, universal LED, plain lens, 1NO + 1NC, 230...240V AC

Schneider Electric

£38.39 28 Aug 2026
Schneider Electric Harmony XALD XALK Empty Enclosure - 5 Cut Outs
96% match

Schneider Electric Harmony XALD XALK Empty Enclosure - 5 Cut Outs

Schneider Electric

£54.60 24 Sep 2026
Schneider Electric Illuminated push button, Harmony XB5, plastic, blue flush, 22mm, universal LED, plain lens, 1NO + 1NC, 230...240V AC
96% match

Schneider Electric Illuminated push button, Harmony XB5, plastic, blue flush, 22mm, universal LED, plain lens, 1NO + 1NC, 230...240V AC

Schneider Electric

£47.22 28 Aug 2026
Schneider Electric ZB5AS944 Emergency Stop Head - Red 40mm
96% match

Schneider Electric ZB5AS944 Emergency Stop Head - Red 40mm

Schneider Electric

£42.67 25 Aug 2026
Schneider Electric Harmony XB4, Emergency stop switching off, metal, red mushroom Ø40, Ø22, trigger latching key release, 1 NC
96% match

Schneider Electric Harmony XB4, Emergency stop switching off, metal, red mushroom Ø40, Ø22, trigger latching key release, 1 NC

Schneider Electric

£92.15 26 Aug 2026
Schneider Electric - Harmony XB4 Illuminated Selector Switch, Flush Mounted, 30mm, Integral LED, Plain Lens, 1NO + 1NC, 230V AC, XB4FW35M5, Orange
96% match

Schneider Electric - Harmony XB4 Illuminated Selector Switch, Flush Mounted, 30mm, Integral LED, Plain Lens, 1NO + 1NC, 230V AC, XB4FW35M5, Orange

Schneider Electric

£43.53 28 Aug 2026
Schneider Electric Harmony XB4 - ATEX D, Push button, metal, projecting, black, Ø22, spring return, booted, unmarked, 1 NO, ATEX
96% match

Schneider Electric Harmony XB4 - ATEX D, Push button, metal, projecting, black, Ø22, spring return, booted, unmarked, 1 NO, ATEX

Schneider Electric

£57.71 29 Aug 2026
Schneider Electric - Harmony XB4 Illuminated Selector Switch, Flush Mounted, 30mm, Integral LED, Plain Lens, 1NO + 1NC, 24V AC/DC, XB4FW36B5, Blue
96% match

Schneider Electric - Harmony XB4 Illuminated Selector Switch, Flush Mounted, 30mm, Integral LED, Plain Lens, 1NO + 1NC, 24V AC/DC, XB4FW36B5, Blue

Schneider Electric

£53.63 11 Sep 2026
Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, red handle, 22mm, 2 positions, universal LED, 1NO + 1NC, 24V AC DC
96% match

Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, red handle, 22mm, 2 positions, universal LED, 1NO + 1NC, 24V AC DC

Schneider Electric

£39.59 25 Aug 2026
Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, orange handle, 22mm, universal LED, 2 positions, 1NO + 1NC, 230...240V AC
96% match

Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, orange handle, 22mm, universal LED, 2 positions, 1NO + 1NC, 230...240V AC

Schneider Electric

£50.38 27 Aug 2026
Schneider Electric - Harmony XVB Universal Illuminated Unit For Modular Tower Lights, Plastic, Ø70, Steady, Integral LED, 24V AC/DC, XVBC2B5, Orange
96% match

Schneider Electric - Harmony XVB Universal Illuminated Unit For Modular Tower Lights, Plastic, Ø70, Steady, Integral LED, 24V AC/DC, XVBC2B5, Orange

Schneider Electric

£80.71 04 Sep 2026
Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, orange handle, 22mm, universal LED, 3 positions, 1NO + 1NC, 24V AC DC
96% match

Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, orange handle, 22mm, universal LED, 3 positions, 1NO + 1NC, 24V AC DC

Schneider Electric

£38.40 27 Aug 2026
Schneider Electric XB4BK124B5 Harmony Selector Switch - Red
96% match

Schneider Electric XB4BK124B5 Harmony Selector Switch - Red

Schneider Electric

£56.12 25 Aug 2026
Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, green handle, 22mm, universal LED, 2 positions, 1NO + 1NC, 110...120V AC
95% match

Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, green handle, 22mm, universal LED, 2 positions, 1NO + 1NC, 110...120V AC

Schneider Electric

£44.06 25 Aug 2026
Schneider Electric XVBC2B4 Red LED Tower Light Unit - 24V
95% match

Schneider Electric XVBC2B4 Red LED Tower Light Unit - 24V

Schneider Electric

£77.64 24 Sep 2026
Schneider Electric Harmony XB5 22mm White Pilot Light
95% match

Schneider Electric Harmony XB5 22mm White Pilot Light

Schneider Electric

£44.75 02 Sep 2026
Schneider Electric Harmony XB5 Emergency Stop Switch - Red
95% match

Schneider Electric Harmony XB5 Emergency Stop Switch - Red

Schneider Electric

£56.80 28 Aug 2026
Schneider Electric Pilot light, Harmony XB5, green, plastic, 22mm, universal LED, plain lens, 400V
95% match

Schneider Electric Pilot light, Harmony XB5, green, plastic, 22mm, universal LED, plain lens, 400V

Schneider Electric

£41.15 02 Sep 2026
Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, green handle, 22mm, 3 positions, universal LED, 1NO + 1NC, 24V AC DC
95% match

Schneider Electric Illuminated selector switch, Harmony XB5, grey plastic, green handle, 22mm, 3 positions, universal LED, 1NO + 1NC, 24V AC DC

Schneider Electric

£38.39 02 Oct 2026