air compressors

Air Compressor Pressure Switches, Alternators and Magnetic Motor Starters

 
 
CASTAIR Air Compressor Pressure Switches, Alternators and Magnetic Motor Starters

 • Corrosion resistant covers
 • UL/CSA listed
 • Easy to adjust
 • No drift pressure settings
Pressure Switches
PSI ON/OFF
DESCRIPTION
PART #
95-125
no unloader
19J52
95-125
w/unloader
19J52X
95-125
w/unloader & on/off
19J52MIX
95-125
w/unloader & on/off w/three way
14J52MIX
145-175
no unloader
49J59
145-175
w/unloader
49J59X
145-175
w/unloader on/off
49J59MIX
145-175
w/unloader & on/off w/three way
44J59MIX
145-175
Extra heavy duty high amp
2J62
145-175
Extra heavy duty high amp w/unloader
2J62X
Unloader valve for pressure switches
9049A56
Pressure Switches
 
 
Alternator - Hour Meter - Time Delay - Low Oil Control
DESCRIPTION
PART #
Automatic two compressor alternator relay 230 volt
ALT230
Automatic two compressor alternator relay 460 volt
ALT460
Hour meter w/varistor (24 to 277 volt)
HRM75
Hour meter for gas engines
HRM50
Time delay 18 to 240 volt  1-1023 seconds
TD100
Low oil control only (no fittings or extra wires)
6304
Float switch for low oil control only
6304B
Alternator
                                                - Hour Meter - Time Delay - Low Oil Control
 • The alternator relay provides a means of automatically alternating the operation of two separate air compressors.
 • Time delay allows two separate units to be started and stopped at the same time without creating a power surge.
 
Magnetic Motor Starters
HP
VOLTAGE
PHASE
PART #
HEATER #
5
208/230
1
S51
B36
7.5
208/230
1
S71
B45
10
230
1
S101
B62
5
208/230
3
S52
B25
5
460
3
S54
B11.5
7.5
208/230
3
S72
B36
7.5
460
3
S74
B22
10
203/230
3
S102
B45
10
460
3
S104
B25
15
208/230
3
S152
B70
15
460
3
S154
B32
20
208/230
3
S202
CC87.7
20
460
3
S204
B40
25
208/230
3
S252
CC112
25
460
3
S254
B45
30
208/230
3
S302
CC143
30
460
3
S304
B56
Magnetic Motor Starters
Heaters: One is required for 1 phase & three for 3 phase
 
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