Relays
52 customer.honeywell.com 70-6925
RP418, RP818 Electric/Pneumatic Relay
Electrically operated pneumatic switches used to interlock an
electrical system and a pneumatic control system. Replacement
devices are available for Johnson, Powers, Robertshaw, Barber-
Colman, and older Honeywell devices.
• Usable as a diverting relay, a selector relay, or a stop and bleed
relay.
• Mount and operate in any position.
• Available with lead wires or junction box.
• Line or low voltage models available.
RP418 & RP818 Typical Piping and Wiring Internal Connections
Type: Electric / Pneumatic Relay
Dimensions, Approximate: 2 7/8 in. high x 3 13/16 in. wide x 1 1/4 in.
deep (73 mm high x 97 mm wide x 32 mm deep)
Airflow Usage: 0.42 scfm (200 mL/s) at 20 psi (138 kPa) supply with 1
psi (7 kPa) pressure drop
Air Connections: Barbed fitting for 1/4 in. O.D. plastic tubing
Capacity: 0.075 Cv minimum
Operation: Energized: ports 1 and 3 connected, port 2 blocked
De-energized: ports 2 and 3 connected, port 1 blocked
Operating Humidity Range (% RH): 5 to 95% RH
Temperature Range: 0 F to 100 F (-18 C to +38 C)
Maximum Safe Operating Pressure: 50 psi (340 kPa)
Approvals:
Canadian Standards Association: Canadian Standards Association
Listed: File No. LR50900
Canadian Underwriters Laboratories, Inc. Listed: File No. LR50900
Underwriters Laboratories, Inc. Component Recognized File:
MP1502, Vol. 11, Sec. 1
UL Listed: Guide Y10Z
FAN
SWITCH
FAN MOTOR
DAMPER
EXHAUST
DAMPER
OPERATOR
RP418 OR
RP818
SUPPLY
AIR
VOLTAGE
SUPPLY
M5429B
1
2
3
M5428
DEENERGIZED:
PORTS 2 AND
3 CONNECTED,
PORT 1 BLOCKED.
ENERGIZED:
PORTS 1 AND
3 CONNECTED,
PORT 2 BLOCKED.
3
1
2
2
3
1
Product Number Mounting
Voltage rating
at 50 Hz
Voltage rating
at 60 Hz Frequency Electrical Connections Includes
RP418A1008 Surface 208 Vac — 50 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP418A1057 Surface 120 Vac — 50 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP418A1065 Surface 440 Vac 480 Vac 50 Hz; 60 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP418A1073 Surface — 277 Vac 60 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP418A1081 Surface — 208 Vac 60 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP418A1099 Surface 220 Vac 240 Vac 50 Hz; 60 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP418A1107 Surface 110 Vac 120 Vac 50 Hz; 60 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP418B1014 Panel mount 208 Vac — 50 Hz 15 in. (380 mm) leads —
RP418B1022 Panel mount 240 Vac — 50 Hz 15 in. (380 mm) leads —
RP418B1030 Panel mount 120 Vac — 50 Hz 15 in. (380 mm) leads —
RP418B1048 Panel mount 440 Vac 480 Vac 50 Hz; 60 Hz 15 in. (380 mm) leads —
RP418B1055 Panel mount — 208 Vac 60 Hz 15 in. (380 mm) leads —
RP418B1071 Panel mount 110 Vac 120 Vac 50 Hz; 60 Hz 15 in. (380 mm) leads —
RP818A1004 Surface — 24 Vac 60 Hz Junction Box and 15 in. (380 mm) leads Junction Box
RP818B1002 Panel mount — 24 Vac 60 Hz 15 in. (380 mm) leads —
RP818B1010 Panel mount 24 Vac — 50 Hz 15 in. (380 mm) leads —
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