FOX series

FOX Current Transformer

Seventeen moulded case frames covering the whole ladder from a 1 A primary wound unit up to a 6000 A vertical busbar body, plus three triple CTs that mount straight onto a breaker.

Primary range1 A to 6000 A across the family
Terminal coversBuilt in sliding sealable covers
Triple bodies25 mm, 35 mm and 45 mm centres
ConstructionMoulded case, primary wound and window type

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Product Overview

The FOX range is a moulded case family with built in sliding sealable terminal covers, published frame by frame. It covers primary wound units for very low primary currents, compact bodies for cable and busbar, vertical busbar bodies for high current risers, and triple bodies that allow installation directly on top of moulded case circuit breakers.

Application Scenarios

Low voltage switchboards and risers
Very low primary current metering
Breaker mounted three phase metering

Technical Features

Primary wound frames with M6 terminals for 1 A to 40 A primary
Compact frames for cable and busbar from 50 A upwards
Vertical busbar frames for high current risers
Triple bodies for direct MCCB mounting
Built in sliding sealable terminal covers

Specifications

Published frames

Frame	Type	Primary range
FOX.SUM	Primary wound, M6 primary terminals	1 A to 40 A
FOX140	Compact, smallest body	50 A to 300 A
FOX21	Compact	100 A to 600 A
FOX30.1	Compact	100 A to 800 A
FOX40.1	Compact	250 A to 1200 A
FOX50.1	Compact	400 A to 1600 A
FOX60.15	Compact	400 A to 2000 A
FOX75	Compact	400 A to 2000 A
FOX.WP	Compact	400 A to 4000 A
FOX100.3	Compact	600 A to 4000 A
FOX105	Vertical busbar	800 A to 4000 A
FOX105.38	Vertical busbar	800 A to 5000 A
FOX127.38	Vertical busbar	3000 A to 6000 A
FOX60.3	Triple, 25 mm centres, 75 mm overall	MCCB top mounting
FOX100.55	Triple, 35 mm centres, 105 mm overall	MCCB top mounting
FOX127.54	Triple, 45 mm centres, 140 mm overall	MCCB top mounting

FAQ

Questions Buyers Ask

What is a primary wound current transformer?

One where the primary is a winding inside the transformer rather than the conductor passing through a window. It is how you get a usable output at very low primary currents, which is why FOX.SUM starts at 1 A.

Which FOX frame mounts on a breaker?

The triple bodies: FOX60.3 on 25 mm centres, FOX100.55 on 35 mm centres and FOX127.54 on 45 mm centres.

Are the terminal covers sealable?

Yes, the range uses built in sliding sealable terminal covers.