Supco 90340, 90341, 90342 Installation Instructions Manual

Sealed Unit Parts Co., Inc.

General Purpose Switching Relays

Installation Instructions

Supco series 903 relays are double pole, double throw (DPDT) devices primarily
used for various applications in heating, air conditioning and refrigeration. They
are also suitable for general purpose switching applications in appliance vending
machines, fan controls and business machines provided the device being con­trolled is within the electrical limits of the relay.

REPLACEMENT PROCEDURE:

1. CAUTION: Disconnect power supply before servicing equipment.

2. Identify and remove wires from defective relay.

3. Remove defective relay and install Supco replacement.

4. Refer to switch diagrams below and connect wires accordingly.

5. Restore power and check operation.

Caution: Do not exceed contact ratings.
Do not connect power contacts to pilot duty contacts.

Contact Rating Power Pilot

1

2

4

5

Terminals 1 & 2, 4 & 5 are normally closed
Terminals 1 & 3, 4 & 6 are normally open

Supco Coil Terminal Terminals Cross Reference
No. Voltage 1-2-3 4-5-6 Essex/RBM Honeywell

90340 24 power power 90-340 R8222D1014
90341 110/120 power power 90-341 R4222D1013
90342 208/240 power power 90-342 R4222N1021

PO Box 21 • 2230 Landmark Place • Allenwood, NJ 08720 • USA

3

Full Load Amps 12 6 - -

6

Resistive Amps* 15 15 3 3
Locked Rotor Amps 60 35 - ­Horsepower 3/4 3/4 1/10 1/10
*0.75 power factor

208/240V 208/240V
120V 277V 120V 277V

F235-599