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 differential 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	• 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

•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

Approvals

UL listed for USA and Canada, file E31024

© Danfoss | DCS (jmn) | 2016.08

DKRCC.PD.CA0.F6.22 | 520H11320 | 1

Data sheet | Thermostat, KPU

Technical data
	Ambient temperature			-40 – 122 °F, 175 °F up to 2 hours
	Cable entry			7/8 in cable entry for 1/2 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
			Alternating current	24 A at 240 V AC
		NAM rating		LRA 1) = 144 A at 120 V AC
				144 A at 240 V AC
	Contact load		Direct current	12 W pilot duty at 240 V DC
			Alternating current	AC1: 16 A, 400 VA
		European rating
				AC3: 16 A, 400 VA
		(acc. to EN 60947)
			Direct current	DC13: 12 W, 220 V control current

1) LRA is rated for make only

Regulating ranges in [°F]

KPU 61
KPU 62 (room sensor)	Vapor charge

KPU 63

KPU 68 (room sensor)

KPU 69

KPU 62

KPU 71

KPU 73

Adsorption charge

KPU 74

KPU 75

KPU 77

-50	0	50						100		150

2 | 520H11320 | DKRCC.PD.CA0.F6.22

© Danfoss | DCS (jmn) | 2016.08

Data sheet | Thermostat, KPU

Ordering

Differential

Max.

Bulb

Reset

Capillary

Range

at lowest

at highest

bulb

Code no.

Type

type

function

tube length

temperature

temperature

temp.

setting

setting

[°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

KPU 61B

B

-20 – 60

fixed 11

fixed 3.5

250

man. 3)

80

060L5204

KPU 61B

B

-20 – 60

fixed 11

fixed 3.5

250

man. 3)

200

060L5205

KPU 62

C1

-20 – 60

10 – 40

2.5 – 13

250

auto.

room sensor

060L5206

KPU 61

B

-20 – 60

10 – 40

2.5 – 13

250

auto. 4)

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

060L5214

KPU 68

C1

25 – 95

8

– 45

3

– 13

250

auto.

room sensor

060L5215

KPU 69

B

25 – 95

8

– 45

3

– 13

250

auto.

80

060L5217

Adsorption 2)

KPU 62

C2

-20 – 60

9

– 36

3

– 14

175

auto. 4)

room sensor

060L5207

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

KPU 73B

E3

-15 – 60

fixed 6

fixed 6

175

man. 3)

80

060L5211

KPU 73

D

-15 – 60

6

– 35

5

– 32

175

auto.

80

060L5212

KPU 71

E2

25 – 70

5.5 – 18

4

– 16

175

auto.

80

060L5218

KPU 71B

E2

25 – 70

fixed 5

fixed 5

175

man. 3)

80

060L5216

KPU 74

E1

0 – 80

9

– 35

9

– 35

175

auto.

80

060L5219

KPU 74B

E1

0 – 80

fixed 10

fixed 10

175

man. 3)

80

060L5220

KPU 75

F

30 – 95

6

– 29

4.5

– 21.5

230

auto.

80

060L5221

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 influence the scale accuracy.

3) Manual minimum reset. Marked with letter B. Fixed differential. These controls have no hand knob.

4) With manual switch and top plate.

Contact system	Switch type – single pole double throw	Switch action	Applicaton
		1. Terminals 1 – 4 close high and
		open low	1. Low temperature cut-out
		Terminals 1 – 2 can be used as
		low temperature alarm
		2. Terminals 1 – 2 open high and
		close low	2. High temperature cut-out
		Terminals 1 – 4 can be used as
		high temperature alarm

© Danfoss | DCS (jmn) | 2016.08

DKRCC.PD.CA0.F6.22 | 520H11320 | 3