4mm Adapter for Relays, CAT II - SLB4-I/90-S Series
These adapters have a right angle connecting pin that can be screwed onto relay housings. The dimensions of the connecting pin are 3.1 mm diameter x 2.5 mm long. Once this adapter is installed it enables conformance to protection class IP2X. These adapters have a 4mm diameter socket that accepts a 4mm diameter spring loaded plug.