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Exe Increased Safety Adaptors and Reducers (AD-E4/RD-E4 Series)







Redapt AD-E4 and RD-E4 Series of Glass Filled Nylon Adaptors and Reducers provide a method of matching electrical threadforms on hazardous area approved equipment whilst ensuring the integrity and Ex approval of the installation is maintained.

Manufactured from hexagon material to facilitate easy installation, they are also supplied complete with a captive O-ring seal. The O-ring is located within a recess on the face of the product, helping to protect the O-ring from environmental damage and ensuring it is not displaced during installation.

Adaptors are used where the thread size of the cable gland or connection device is larger than, or of an equivalent size, to the entry thread of the enclosure.

Reducers are used where the thread size of the cable gland or entry device is smaller than the entry thread of the enclosure.

Redapt Adaptors & Reducers are designed for hazardous area applications and are certified to protection concepts Exe “Increased Safety” for use in Zone 1 and Zone 2 applications.

Approved to the latest international standards, adaptors and reducers can be supplied with ATEX, IECEx and GOST-R hazardous area certificates. In addition CSA approval certificates can be supplied to cover use in North American and Canadian Class I Division 2 and Class I Zone 1 applications.

Nylon adaptors and reducers are also available as an Exe Increased Safety round bodied product - the AO-E4 Series (adaptors) and RO-E4 Series (reducers). 

Technical Data Table

Protection Method
Exe – Increased Safety
Ingress Protection (IP) Maintained
IP66 / IP67 / IP68 to a depth of 2 metres
Impact Resistance

-20°C to 40°C (ATEX)

-20°C to 65°C (IECEx)

(depending on O-ring material)


Base Materials 

O-ring Materials


30% glass filled nylon

Nitrile, silicone, viton, EPDM, neoprene, others on application 

Metric, NPT, NPSM, PG, ISO Pipe (BSP), ET, others on application
Standards Approved To
IEC 60079-0, IEC 60079-7, IEC 61241-0, IEC 61241-1

Ex Approvals 

ATEX Approval


IECEx Approval

GOST-R Approval 



CSA Approval


IECEx SIR 12.0038X

TC RU С-GB.ГБ06.В00106 - Russian
TC RU С-GB.ГБ06.В00106 - English
TC RU С-GB.ГБ06.В00106 Annex Document - English

1248014 (LR 106084)

Installation Instructions
Installation Sheet Nylon Adaptors & Reducers
Product Datasheet

Nylon Adaptors & Reducers

Adaptor and Reducer Selection Guide

How To Order

Part Number System