
MARS General Purpose Switching Relays
MARS SERIES 903
2-Pole Air Conditioning Relays
he MARS Series 903 switching relays are intended for many
T
applications in air conditioning, refrigeration, and heating. Other
COMPONENT
90340
uses include general purpose switching in appliances, fan
controls, and vending machines. Our relays are available in 24,
110/120, and 208/240 coil voltages with various combinations
of power and pilot duty contacts.
Features:
• Replaces Honeywell and White-Rodgers/RBM - cross
reference on package
• Double quick-connect terminals on coil
• 2.13 x 1.88 x 2.25 in.
• Base is designed for easy replacement of
competitive relays
• Molded terminal numbers and circuit
diagram on top of relay
• UL and CSA listings available
MARS
NO.
90340
90341
90342
90343
90344
90345
90346
90348
COIL
VOLTAGE
24
110/120
208/240
24
110/120
208/240
24
208/240
TERMINALS
TERMINALS
1-2-3
Power Power
Power Pilot
Pilot Pilot
4-5-6
POWER PILOT
120V 208/240V 120V 208/240V
Full Load Amps 12 6 — —
Resistive Amps* 15 15 3 3
Locked Rotor Amps 60 35 — —
Horsepower 3/4 3/4 1/10 1/10
*277 VAC
Cross Reference Information
WR/RBM MARS HONEYWELL MARS
No. Replacement No. Replacement
90-340 90340 R4222B1082 90344
90-341 90341 R4222B1090 90345
90-342 90342 R4222D1013 90341
90-343 90343 R4222D1021 90342
90-344 90344 R4222N1010 90348
90-345 90345 R4222V1002 90344
90-346 90346 R4222V1010 90345
90-348 90348 R8222B1067 90343
R8222D1014 90340
R8222N1011 90346
R8222V1003 90343
Coil Data: 24-240 VAC @ 50/60 Hz; 21.5 VA Max.
Inrush; 9.5 VA Max. Sealed
C-30
The largest selection of motors, components, and accessories for the HVAC/R Industry
NOTE: MARS Series 903 Relays are available with
277 volt coils. Minimum order quantity 50
per model.