Danfoss KPU 74B, KPU 74, KPU 75, KPU 77, KPU Data sheet

Data sheet

Thermostat
KPU

The KPU Thermostats are temperature controlled
electrical switches, which are applied for regulation
and safety monitoring of refrigeration and air
conditioning systems.

KPU sensors are available with vapor charge or
with adsorption charge. The Thermostats with
adsorption charge are widely used to give frost
protection, while vapor charged sensors are used
where small dierential is required.

All KPU Thermostats have a single pole double
throw (SPDT) contact system. Theposition of the
switch depends on the thermostat setting and the
bulb temperature.

Features

Approvals

© Danfoss | DCS (jmn) | 2016.08 DKRCC.PD.CA0.F6.22 | 520H11320 | 1

• Wide temperature regulating range allows use in
low, medium, and high temperature refrigeration
application and air-conditioningsystems

• Snap-action electrical contacts minimize chatter,
bounce and wear, and ensure long-term electrical
and mechanical reliability

• Fingertip manual trip feature allows contact
function testing without tools

• Easily replaces other manufacturers’ thermostats

• Ultra-short bounce time

UL listed for USA and Canada, le E31024

• Long operating lifetime

• Vibration and shock resistant

• SPDT switch allows NC or NO function option as
well as alarm capability

• Automatic and manual reset versions available

Data sheet | Thermostat, KPU

Technical data

Regulating ranges in [°F]

Ambient temperature -40 – 122 °F, 175 °F up to 2 hours

Cable entry

⁄ in cable entry for ½ in male pipe thread connection
(conduit boss)

Maximum wire dimension 10 AWG

Enclosure ~NEMA 1

Switch SPDT – single pole double throw

FLA = 24 A at 120 V AC

24 A at 240 V AC

NAM rating

Alternating current

1

) = 144 A at 120 V AC

LRA

144 A at 240 V AC

Contact load

Direct current 12 W pilot duty at 240 V DC

AC1: 16 A, 400 VA

European rating
(acc. to EN 60947)

Alternating current

AC3: 16 A, 400 VA

Direct current DC13: 12 W, 220 V control current

1)

LRA is rated for make only

KPU 61

KPU 62 (room sensor) Vapor charge

KPU 63

KPU 68 (room sensor)

KPU 69

KPU 62

KPU 71

KPU 73 Adsorption charge

KP U 74

KPU 75

KPU 77

-50 0 50 100 150

© Danfoss | DCS (jmn) | 2016.082 | 520H11320 | DKRCC.PD.CA0.F6.22

Data sheet | Thermostat, KPU

Ordering

Typ e

Bulb
type

Range

Dierential

at lowest

temperature

setting

at highest

temperature

setting

Max.
bulb

temp.

Reset

function

Capillary

tube length

Code no.

[°F] [°F] [°F] [°F] [in]

Vapour 1)

KPU 61 A -20 – 60 10 – 40 2.5 – 13 250 auto. 80 060L5201

KPU 61 B -20 – 60 10 – 40 2.5 – 13 250 auto. 80 060L5203

3

KPU 61B B -20 – 60 fix e d 11 fixed 3.5 250 man.

KPU 61B B -20 – 60 fix e d 11 fixed 3.5 250 man.

) 80 060L5204

3

) 200 060L5205

KPU 62 C1 -20 – 60 10 – 40 2.5 – 13 250 auto. room sensor 060L5206

4

KPU 61 B -20 – 60 10 – 40 2.5 – 13 250 auto.

) 80 060L5210

KPU 63 A -60 – 15 18 – 125 5 – 15 250 auto. 80 060L5213

KPU 63 B -60 – 15 18 – 125 5 – 15 250 auto. 80 06 0L5214

KPU 68 C1 25 – 95 8 – 45 3 – 13 250 auto. room sensor 060 L5215

KPU 69 B 25 – 95 8 – 45 3 – 13 250 auto. 80 060 L5217

Adsorption 2)

KPU 62 C2 -20 – 60 9 – 36 3 – 14 175 auto. 4) room sensor 060L5207

Contact system

KPU 73 E3 -15 – 60 6.5 – 32 5 – 50 175 auto. 80 060L5208

KPU 73 E1 -15 – 60 22 – 125 15 – 45 175 auto. 80 060L5209

3

KPU 73B E3 -15 – 60 fixed 6 fixed 6 175 man.

) 80 060 L52 11

KPU 73 D -15 – 60 6 – 35 5 – 32 175 auto. 80 060L 5212

KPU 71 E2 25 – 70 5.5 – 18 4 – 16 175 auto. 80 06 0L5218

3

KPU 71B E2 25 – 70 fixed 5 fixed 5 175 man.

) 80 060L 5216

KP U 74 E1 0 – 80 9 – 35 9 – 35 175 auto. 80 06 0L5219

3

KP U 74 B E1 0 – 80 fixed 10 fi xe d 10 175 man.

) 80 060L5220

KPU 75 F 30 – 95 6 – 29 4.5 – 21.5 230 auto. 80 06 0L 5221

KPU 77 E3 60 – 140 6 – 18 6.3 – 18 265 auto. 80 060L5223

1)

Bulb must be installed in colder position than thermostat

housing and capillary tube.

2

) Bulb can be placed warmer or colder than thermostat housing
and capillary tube, but variations from 70 °F
ambienttemperature will inuence the scale accuracy.

3

) Manual minimum reset. Marked with letter B. Fixed dierential.

These controls have no hand knob.

4

) With manual switch and top plate.

Switch type – singlepoledoublethrow Switch action Applicaton

1. Terminals 1 – 4 close high and
open low
Terminals 1 – 2 can be used as

1. Low temperature cut-out

low temperature alarm

2. Terminals 1 – 2 open high and
close low
Terminals 1 – 4 can be used as

2. High temperature cut-out

high temperature alarm

© Danfoss | DCS (jmn) | 2016.08 DKRCC.PD.CA0.F6.22 | 520H11320 | 3