User Manual

CE1N3019en

21.05.2002

Siemens Building Technologies

HVAC Products

019

Fan Speed Switch

RAB90

Simple fan speed switch with three speed-levels (0-I-II-III)

Use

The RAB90 is used in heating or cooling systems to select the fan speed.

Typical use can be in commercial, residential or light industrial buildings.

Mechanical design

The unit consists of a base plate and a top cover.

The fan speed can be selected with a 4-position-slider-switch (0-I-II-III).

Accessories

Functionality Order number (ASN)

Adapterplate 120 x 120mm for 4“ x 4“ conduit boxes ARG70

Adapterplate 96 x 120mm for 2“ x 4“ conduit boxes ARG70.1

Notes

The unit can be fitted to most commercially available recessed conduit boxes or directly

on the wall.

Only authorised personnel may open the unit to perform service.

(Caution 250 V!).

The unit must be isolated from the mains supply before opening.

PAGE 1
3 019 RAB90 Fan Speed Switch Simple fan speed switch with three speed-levels (0-I-II-III) Use The RAB90 is used in heating or cooling systems to select the fan speed. Typical use can be in commercial, residential or light industrial buildings. Mechanical design The unit consists of a base plate and a top cover. The fan speed can be selected with a 4-position-slider-switch (0-I-II-III).
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When installing the unit, fix the base plate first then hook on the fan speed switch body and make the electrical connections. Then fit the cover and secure it. The fan speed switch must be mounted on a flat wall. The local electrical regulations must be complied with. The fan speed switch is maintenance-free. The housing is plastic.