(A Division of Westfield Distribution Limited)
Tel: +44 (0)1488 685183   
Email:  sales@westfield.co.uk   Fax:  +44 (0)1488 685430
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Series 311 Terminal block, low 7.5 mm profile, top wire & front screw

PCB terminal block that is a special small design
(only 7.5 mm high) that can help if space is a problem. 
Available in 5 or 10mm pitch. Moulded in 2- and 3-pole blocks which dovetail together to give larger numbers of poles.
We deliver pre-assembled blocks to the number of poles you require. 
There is a wire guard for wire protection, so that the screw doesn't press directly on the wire.
PCB Screw	Terminal Block Series 311
Rating, Resistance to Tracking 16A per way maximum, KB 380
Typical Mechanical and
Electrical Specifications
Rated Voltage VDE0110 Clamp range
sq mm
Group A Group B Wire guard No wire guard
5 mm 250 125 1.5 2.5
10 mm 380 250 1.5 2.5
Plastic Material
Black or blue glass-filled polyester (UL 94 VO)
Metallic Parts Tin-plated brass contact (metal housing)
Steel galvanized and chromatized screw M2.6x4.5
Wire guard Cu Sn 6, Tin-plated solder tail
Operating & Soldering Temperature -T33 Celsius to +T120 Celsius, T260 Celsius 5 secs max
Approvals UL E 124838 (S)
Marking None; 1 to 100; A to Z; custom (specify when ordering). Can be labelled, printed or hot-foiled



Technical Drawing

Dimensions of Series 311








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(A Division of Westfield Distribution Limited)
Tel: +44 (0)1488 685183   Email:  sales@westfield.co.uk   Fax:  +44 (0)1488 685430
Please note: Due to technical progress, all designs, specifications, data sheets & components are subject to change without notice. 
Please call / fax / e-mail for samples & full engineering drawings, Certificates of conformance issued if required. E&OE