Safety Device Set

Assembly

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Code-required protective switches that stop the escalator on a missing or broken step, comb-plate impact, skirt obstruction, handrail-speed deviation or step-chain breakage.

Direct parts	6
Total parts	10
Used in	1 assembly
Class	Assembly

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Code-required protective switches that stop the escalator on a missing or broken step, comb-plate impact, skirt obstruction, handrail-speed deviation or step-chain breakage. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Safety Device Set parts and their functions

6 top-level parts · 10 parts in total · full bill of materials below

Safety Device Set parts diagram: 1 step-missing switch, 2 comb-impact switch, 3 skirt obstruction switch, 4 handrail speed switch, 5 broken step-chain switch, 6 emergency stop button. 10 parts in 6 top-level items. — Safety Device Set parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Step-Missing Switch	1×	Sensor that detects a missing step at the comb and trips the drive.
2	Comb-Impact Switch	2×	top and bottom combs
3	Skirt Obstruction Switch	2×	each side
4	Handrail Speed Switch	2×	Sensor that trips if the handrail speed deviates from step speed.
5	Broken Step-Chain Switch	1×	Switch monitoring step-chain tension that stops the drive on slack or breakage.
6	Emergency Stop Button	2×	each landing

3D model

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Build & assembly graph

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Bill of materials for Safety Device Set

6 top-level lines · 6 rows shown · 10 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Step-Missing Switch	escalator-step-missing-switch	1×	1	·	part
2	Comb-Impact Switch	escalator-comb-impact-switch	2×	2	·	part
3	Skirt Obstruction Switch	escalator-skirt-switch	2×	2	·	part
4	Handrail Speed Switch	escalator-handrail-speed-switch	2×	2	·	part
5	Broken Step-Chain Switch	escalator-broken-chain-switch	1×	1	·	part
6	Emergency Stop Button	escalator-estop-button	2×	2	·	part

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Where the safety device set is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Elevators & Escalators 1 Escalator

Used in 1 assembly

Escalator

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks