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Hammond expand the popular 1551 family of enclosures ideal for housing IoT sensors, samples available from Anglia

Date Published : 14/06/2023 Share with:

Hammond Manufacturing have expanded their popular 1551 family of miniature plastic enclosures with the addition of an unventilated case option and three round versions.

The standard ventilated enclosures are designed to house sensors and small sub-systems installed in industrial environments. These enclosures have proven very popular due to one of their key features being the snap-fit closure that allows repeated opening and closing without tools and also maximises the internal space for PCBs by eliminating screw fixings to secure the cover to the base. The enclosures feature ventilation slots on all four vertical faces of the cover allowing sensors to detect the surrounding environment, the base of the cases feature wall mounting slots and a 15mm cable knock out in the base for extra convenience.

Click below for an overview of the 1551V Enclosure features


The 1551 family are offered in square and rectangular shapes and they have now introduced three round versions and the additional option of plain, unventilated covers throughout. In some applications, the entry of air and moisture into the enclosure is either not required or detrimental to the reliability of the electronics; the new plain cover versions offer increased protection against dust, dirt and moisture verses the vented enclosures, which are designed for housing environmental sensors.

The 1551 family is now available in 4 square and rectangular sizes of 80 x 80, 60 x 60, 40 x 40 and 80 x 40mm, all 20mm high and the new round versions are offered in 45, 60 and 80mm diameter, again all 20mm high. Due to the snap-fit closure mechanism this has allowed Hammond to remove the pillars from the inside of the enclosure which would usually be required for screw fixed types, this allows increased space for the PCB, in addition the enclosure bases are all fitted with 4mm PCB standoffs allowing users to secure the PCB in position via screws. The square and rectangular enclosures can accommodate maximum PCB sizes of 74 x 74, 54 x 54, 34 x 34 and 74 x 34mm respectively whilst the round enclosures can house maximum PCB sizes of 39, 54 and 73.50mm diameter respectively.

Enclosure base features

A) Assembly hooks (square/rectangle models only)
B) Wall-mounting slots
C) Snap-fit closures
D) 15mm wire entry knockout
E) PCB standoffs


The enclosures are all constructed from robust ABS material flame retardant to UL94-HB and are offered in 3 colours throughout, black, grey and white.


Hammond recognise that in-house or 3rd party enclosure modifications can be tedious, over-complicated, and a distraction from a customer’s core business. So they offer a factory modified enclosure service which gives customers access to an experienced enclosure modification team and two dedicated modification facilities located in North America and Europe. The Hammond factory modified enclosure service helps eliminate scrap and design errors with approval drawings to confirm correct interpretation of customers exact design requirements.

The service is offered with a low minimum order quantities and includes the following popular options:

  • Holes
  • Cut-outs
  • Tapping and Countersinking
  • Pressed-in hardware (studs, standoffs)
  • Silk Screening
  • UV Printing
  • Special colours
  • Special length extrusions
  • Pre-Installed Accessories
  • Available services vary by product


If you would like to enquire about enclosure customisation options please contact Anglia.

The Hammond 1551V family enclosures are suited to a wide range of applications including data loggers, sensors, environmental monitoring, industrial equipment, IoT devices, speakers and audible indicators and many more...

Key Features

  • Snap-fit closure for easy assembly and opening without tools
  • Wall-mounting features include slots and central 15mm diameter cable knockout
  • Available in Square, Rectangle or Round shapes
  • 4 size options for Square types and 3 for Round types
  • 3 colour options: black, grey and white
  • Choice of vented or unvented
  • Pillarless construction allows maximum PCB area
  • Bases feature 4mm high PCB stand-offs
  • Moulded from robust ABS material
  • Flame retardant to UL94-HB
  • Designed to meet IP30.
  • Satin texture finish


Click here for more information or to buy from Anglia Live.

Click here to download the 1551V family enclosure range overview

Anglia are offering customers FREE samples of the 1551V family snap-fit wall mounting enclosures from Hammond, please fill in the form below to register for samples now.




To register for FREE samples of the 1551V family snap-fit wall mounting enclosures from Hammond, please fill in the form below.

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FREE samples for UK and Ireland customers only, subject to availability.

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