Description

Relays are important to the integrity of monitoring systems. They provide

external alarm annunciation or input to an automatic shutdown device. You can

order 3300 monitors with quality, built-in relays. Installation requires no external

wiring between relays and rack, and no extra housing to mount the relays. This

facilitates installation and minimizes the chance of errors associated with field wiring.

The 3300 system offers 2 relay module types:

• Dual, with 2 relays per module

• Quad, with 4 relays per module.

For system installations on the machine deck, in hazardous areas, or in areas

with harsh environments, the dual relay module is available with hermeticallysealed relays.

For non-hazardous areas and clean environments such as control

rooms or instrument panels, modules with epoxy-sealed relays are available.

All relay modules include arc suppressors as a standard feature to increase the

life of the contacts by reducing arcing at the switching point.