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Tap-off unit

Assembly

Plug-in box drawing power from the run through sprung contacts into a moulded-case circuit breaker. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Tap-off unit parts and their functions

12 top-level parts · 23 parts in total · full bill of materials below
Tap-off unit parts diagram: 1 tap-off enclosure, 2 tap-off door, 3 sprung tap contact, 4 tap-off earth contact, 5 moulded-case circuit breaker, 6 door interlock, 7 auto contact shutter, 8 cable gland plate, 9 cable gland, 10 DIN rail, 11 terminal block, 12 fastener set. 23 parts in 12 top-level items.
Tap-off unit parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.
#PartQtyWhat it does
1 Tap-off enclosure 1× Sheet steel IP55 box
2 Tap-off door 1×
3 Sprung tap contact 4× Sprung phase and neutral tap contacts
4 Tap-off earth contact 1× Leading earth contact
5 Moulded-case circuit breaker 1× Moulded-case circuit breaker
6 Door interlock 1× Door-to-isolator mechanical interlock
7 Auto contact shutter 1× Auto shutter over de-energised contacts
8 Cable gland plate 1×
9 Cable gland 4×
10 DIN rail 1×
11 Terminal block 6×
12 Fastener Set 1× Bolts, nuts, and washers.

3D model

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Build & assembly graph

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Bill of materials for Tap-off unit

12 top-level lines · 12 rows shown · 23 parts total · indented to 3 levels
# Item / sub-assembly Part no. Qty/assy Ext. qty Parts Type
1 Tap-off enclosure bt-tap-off-enclosure 1× 1 · part
2 Tap-off door bt-tap-off-door 1× 1 · part
3 Sprung tap contact bt-tap-off-contact-set 4× 4 · part
4 Tap-off earth contact bt-tap-off-earth-contact 1× 1 · part
5 Moulded-case circuit breaker bt-mccb 1× 1 · part
6 Door interlock bt-tap-off-interlock 1× 1 · part
7 Auto contact shutter bt-tap-off-shutter 1× 1 · part
8 Cable gland plate bt-cable-gland-plate 1× 1 · part
9 Cable gland bt-cable-gland 4× 4 · part
10 DIN rail bt-din-rail 1× 1 · part
11 Terminal block bt-terminal-block 6× 6 · part
12 Fastener Set fastener-set 1× 1 · part

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Where the tap-off unit is used

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

Used in 1 assembly

Busbar Trunking System

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
VendorHQSpecialtyMOQLead 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