Danfoss KPU Series Installation Manual page 3

Wiring Option A:
– KPU 15 Pressure Switch (SPST (NO + NC))
LOAD
Wiring
Electrical ratings according to UL regulations
Contacts Motor ratings
A – B FLA
AC LRA make only
NIA
A – C
A – D
European electrical ratings according to EN 60947
AC1 AC3
16 A 16 A
400 V
The terminal block as well as grounding screw are accessible
after dismounting of the front cover.
Contact function test (Manual trip)
When the electrical leads are connected the contact function
can be manually tested regardless of pressure conditions in the
system. For LP side testing use the trip lever located in the left
side of the dual KPU. The lever must be operated with fingers
only. Do not use screwdriver as it will damage the switch. For HP
side testing use lever located at bottom of right side of the dual
KPU. The lever must be carefully operated with a screwdriver.
NOTE:
While operating the manual trip on KPU switches with
manual reset it is necessary to push the reset knob.
A: Manual reset button (available only on switches with manual/
convertible reset function)
B: HP Manual trip. Press the lever up. Use screwdriver only!
C: Terminal block
D: Grounding screw
E: LP Manual trip. Press the lever up. Use fingers only!
© Danfoss | DCS (jmn) | 2017.01
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120 V AC 240 V AC
24 24
144 144
24 24
Pilot Duty 12 W, 120/240 V DC
Pilot Duty 50 VA, 240 V AC
AC15 LR DC13
10 A 112 A 12 W
220 V
Wiring Option B:
– KPU 16 Pressure Switch (SPDT with LP/HP signal)
LOAD
LP signal
Wire dimensions: 10 AWG max.
Cable entry: / inch cable entry for
7
8
connection (conduit boss) or similar (Pg 13.5 or Pg 16) screwed
cable entry.
CAUTION:
Disconnect power supply before wiring connections
are made or service to avoid possible electrical shock or
damage to equipment.
Do never touch live parts with your fingers or with
any tool.
NOTE:
All wiring should conform to the National Electrical Code
and local regulations.
Use copper wire only.
Use terminal screws furnished in the contact block.
Do not exceed tightening torque 20 lb. in (2.3 Nm).
Do not exceed electrical ratings for the switch.
E
HP signal
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/ inch male pipe thread
1
2
A
C
D
DKRCC.PI.CD0.C6.02 | 520H11521 | 3
B