Danfoss B0 - B62 Data sheet

Data Sheet

Service kit Type B0 - B62

Thermostat for refrigerators and freezers.

Electromechanical thermostat 077B is used to control the temperature in refrigerators, upright and chest freezers, liquid coolers, bottle coolers and small commercial refrigeration appliances. The thermostat can be used as an evaporator thermostat or a room thermostat.

The thermostats are available with normal function, xed cut-in and cut-out temperature, constant or variable cut-in temperature for automatic defrost, and with a push button for semi-automatic defrost.

All thermostats have NC (Normally closed) main contacts; i.e. they cut out the compressor current circuit on decreasing temperature.

077B thermostats are available as a standard thermostat range, as a service kit range and as customer specied versions adapted to specic appliances.

Service kit thermostats are created with specications and accessories that allow universal application in the aftermarket, for thermostat servicing on all types of refrigeration and freezing appliances.

Service kit thermostats have a wider regulating range than standard thermostats, and have dierentials that ensure sucient standstill to protect the compressor. They enable servicing on all refrigerating and freezing appliances independent of the make of thermostats, and are contained in practical boxes complete with electrical diagram and drawings of contents.

AI357347699370en-000101

077B service kits

077B made to order

Warm cut-out [°C]

See Ordering for individual code no.

In range from ~-30 – 15 °C in steps of 0.1 °C

Warm cut-in [°C]

See Ordering for individual code no.

In range from ~-23 – 20 °C in steps of 0.1 °C

Cold cut-out [°C]

See Ordering for individual code no.

In range from ~-40 – 39 °C in steps of 0.1 °C

Cold cut-in [°C]

See Ordering for individual code no.

In range from ~-33 – 12 °C in steps of 0.1 °C

Capillary tube length

0.6 m

0.9 m

1.0 m

1.2 m

1.3 m

1.6 m

2.0 m

2.3 m

0.6 - 2.9 m

Connection terminals

4.8 x 0.8 mm All

6.3 – 4.8 x 0.8 Mix

6.3 x 0.8 mm All

4.8 x 0.8 mm All

6.3 – 4.8 x 0.8 Mix

6.3 x 0.8 mm All Terminal 4 single

Barometric pressure setting

1013 hPa (760 mm Hg)

Altitude adjusted

Approvals

BEAB UL EAC

Accessories

Includes mounting accessories

Customer specied

Packing

Individually packed with instructions

Industrial packs

Service kit, type B0 - B62

Features

• Product identication data laser printed on product ⁃ Easy and lasting product identication.

• NC (Normally Closed) main contacts. ⁃ Cut-out of compressor on falling temperatures.

• Terminals with spade connectors 6.3 x 0.8 mm, 4.8 x 0.8 mm or combinations. ⁃ Fits into the majority of household and light commercial refrigerators and freezers.

• Electrical loads of 6/36 A or 8/40 A (FLA/LRA), designed for a minimum of 300.000 cycles at full load. ⁃ Reliable and lasting switching function.

• Service thermostat code no. delivered in Multipack ⁃ Service thermostats include relevant accessories and installation guides.

Portfolio

The complete 077B portfolio is very large, but the majority of 077B products are produced to order, as specied by manufacturers of refrigeration appliances. This data sheet covers the aftermarket version of the 077B thermostats, i.e. thermostats designed to replace made to order versions in an appliance service situation.

The primary dierences between made to order versions and service thermostats can be summarized as follows.

Table 1: 077B portfolio summary

Cut-out

range

Differential

Warm

Middle Cold

Cut-in range

Temperature interval

°C

Temperature interval

Cut-out range

Warm Middle Cold

Danfoss

77B58.11

Service kit, type B0 - B62

Functions

Thermostat function

The thermostat regulates by cutting o or cutting in current to the compressor. Depending on the temperature registered by the thermostat sensor, the thermostat controls the compressor by powering it (cut-in) or depowering it (cut-o). The thermostat can be used either as an evaporator thermostat or a room thermostat.

All normal function thermostats have a cut-out temperature range and a cut-in temperature range. The dierential is dened as the dierence between cut-in and cut-out temperatures. However, the temperature settings of xed function thermostats are non-adjustable.

Figure 1: Cut-in, cut-out and dierential for normal thermostats

On thermostats with constant cut-in temperature, B6 type, the terms “dierential” and “cut-in temperature range” do not apply. The only relevant terms are “cut-out temperature range” and “temperature interval”.

Figure 2: Cut-out and temperature interval for thermostats with constant cut-in temperature

Function and operation mode

The description covers the 077B types used as Service thermostats. Function and operation modes for the entire portfolio are described in the data sheet "Thermostats for refrigerators and freezers, 077B"

Function

Operation mode

Type

Description

Danfoss

77B207.10

Pos.

°C

Warm Middle Cold

Cut-in

Cut-out

Danfoss

90U22.12

3 4

Without extra functionality

Danfoss

90U23.12

3 4

B02

With auxiliary contact

 NOTE:

Cant be used in combination with Low torque cam.

Danfoss

90U24.12

B02

With auxiliary contact

Function

Operation mode

Type

Description

Danfoss

77B209.10

Pos.

°C

Warm Middle Cold

Cut-in

Cut-out

Signal

Danfoss

90U42

B20

With signal contact that cuts in on rising temperature

Danfoss

90U30.12

With signal contact, cutting out on rising temperature

Service kit, type B0 - B62

Table 2: Function and operation mode B0 and B02 versions

Table 3: Function and operation mode B20 and B3 versions

Function

Operation mode

Type

Description

Danfoss

77B211.10

Pos.

°C

Warm Middle Cold

Cut-in

Cut-out

Defrost cut-in

Danfoss

90U31.12

No name

Defrost resistance

With push button defrost

Function

Operation mode

Type

Description

Danfoss

77B213.10

Pos.

°C

Warm Middle Cold

Cut-out

Cut-in

Danfoss

90U23.12

3 4

B62

With constant cut-in temperature, automatic defrost and auxiliary contact

 NOTE:

Cant be used in combination with Low torque cam.

Danfoss

90U24.12

B62

With constant cut-in temperature, automatic defrost and auxiliary contact

Service kit, type B0 - B62

Table 4: Function and operation mode B4 versions

Table 5: Function and operation mode B62 versions

Applications

Thermostat 077B is used to control the temperature in refrigerators, upright and chest freezers, liquid coolers, bottle coolers and small commercial refrigeration appliances.

The thermostat can be used as an evaporator thermostat or a room thermostat.

The Service Thermostat version have a wider regulating range than standard thermostats, and are optimized for servicing on all refrigerating and freezing appliances independent of the make of thermostats.

077B thermostats are available with normal function, xed cut-in and cut-out temperature, constant or variable cutin temperature for automatic defrost, and with a pushbutton for semi-automatic defrost.

The thermostats can be supplied with the following supplementary functions:

• Auxiliary contact

• Change-over contact

• Signal contact

• Signal contact + series contact

• Signal contact + super freeze-function and indication of same

• Enclosed Brake Device contacts for appliances charged with ammable refrigerants

• Low torque spindle stop turn

Danfoss

77B215

t1t2t3t4mp

EBD

077Bxxxx

077BxxxxL

wwyo

077B indentication keys

(E.g. B0)

077B indentication keys

(E.g. B0 with low di. contact system)

B0 t1

EBD

mp cccccccc

077Bxxxx wwyo

t2 t4

Danfoss

77B216

B0 t1

EBD

mp cccccccc

077BxxxxL wwyo

t2 t4

Danfoss

77B217

Cut-in temp. in pos. warm

Cut-in temp. in pos. cold

Cut-out temp. in pos. warm

Cut-out temp. in pos. cold

Manufacturing place

EBD function (optional)

Danfoss code number

Week no.

Year (last digit)

No. of order this week

Position

Inscription

Explanation

Product engraving; Box label

B26 on laser engraving (pos. 1), B0 on label

Type of product

Box label

Thermostats

Product group

Product engraving; Box label

077B0007 (box), 077B2602 (laser engraving pos. 4)

Code number

Box label

12587723

Order no.

Box label

BN 2

Internal production line code

Box label

4791

Internal production time code

Box label

Made in Slovakia

Manufacturing site acc. to EN standards

Box label

Industrial pack

Packing format

Box label

1034534

Internal vendor code no.

Box label

90 pcs.

Quantity of products in pack

Box label

(Approval logos)

Approved by relevant approval authority (BEAB, CE, EAC, UL, ENEC, LLC-CDC)

Product engraving

BN (pos. 3)

Internal production line code

Service kit, type B0 - B62

Product specication

Product identication

Relevant product data is available on the box label, and on the product laser engraving.

Figure 3: Box label for 077B thermostat, type B0

Table 6: Name plate

Figure 4: Laser engraving on 077B thermostat

Table 7: Label designation

Position

Inscription

Explanation

Product engraving

115349472 (pos. 2)

Customer code number (for thermostats made to order)

Product engraving

3691 (pos. 6)

Internal production code denoting time of production

Product engraving

(pos. 11)

Data Matrix, ECC 200

Danfoss

77B66.11

7 86

1112

32495

Position

Item

Material specication

Earth spade tab

Brass (AZ)

Contact system complete

Thermoplastic material, silver, brass (AZ)

Connection spade tab

CuZn4Dierential screwZn5

Main arm

Brass (AZ)

Bellows element

CuSn7Capillary tube/sensor

Copper/tin

Main spring

Spring steel

Cut out screw

Steel10SpindleZn11

Nut

Steel12Range curve

Brass (AZ)

Service kit, type B0 - B62

NOTE:



Laser engravings are dierent depending on type and customer requirements.

Design and materials

Figure 5: 077B design and materials cut-away

Table 8: 077B design and materials

Electrical connections and specications

Connections

077B thermostats are available with spade connectors in either 4.8 x 0.8 mm or 6.3 x 0.8 mm.

Figure 6: Spade tab connector layout

Relay

contacts

Functions

Type

Contact rating for

Europe (250 V)

Contact rating for USA (240 V)

3-4

Main contact

B0, B02, B025, B04, B045, B2, B24, B25, B26, B3, B34, BB4, B5, B52, B53, B6, B62, B63

6 (6) A

FLA:6. RLA: 36

3-6

Auxiliary contact

B02, B52, B62

6 (6) A

FLA:6. RLA: 36

3-6

Signal contact

B2, B24, B25, B26

0.1 A

FLA:0.1. RLA: NI (Resistive)

3-6

Changeover contact

B025, B04, B53, B63

0.5 (0.1) A

FLA:0.1. RLA: 0.6

3-8

Super freezer contact

B26

0.1 A

FLA:0.1. RLA: NI (Resistive)

3-8

Series contact

B25

6 (6) A

FLA:6. RLA: 36

Description

Temperature range [°C]

Temperature range [°F]

Temperature interval

-42 – 11 °C

-44 – 52 °F

Cut-out temperature range

5 – 20 °C

41 – 68 °F

Dierential

(depending on spindle position and type)

3 – 5 °C

37 – 104 °F

Constant cut-in temperature (type 077B6 only)

1 – 11°C

34 – 52 °F

Signal temperature

3 – 5°C higher than cut-in temperature

37 – 41 °F higher than cut-in temperature

Ambient temperature range

-25 – 65 °C

-13 – 149 °F

Service kit, type B0 - B62

Electrical specications

The series contact cuts out when the spindle is turned to position “stop”. Both the main and signal contacts are cut out. The series contact withstands a max. load of 6/36 A or 8/40 A (FLA/LRA).

The auxiliary contact cuts out when the spindle is turned to position “stop”. The auxiliary contact can be used to cut out a heating element, for example, also in line with the main switch. The contact withstands 6/36 A 240 V AC / 50 Hz or 8/40 A 240 V AC / 50 Hz.

The signal contact is used to set o an alarm (audible or visual) when the sensor temperature exceeds 3 – 5 °C of the cut-in one. The signal contact withstands a max. load of 0.1 A NI (Resistive).

The reversing switch (changeover contact) is mainly used to control 3/2-way solenoid valves in dual temperature cabinets. The changeover contact withstands a max. load of 0.5 A NI (resistive) or 0.1 A (inductive).

The super function contact cuts in when the spindle is turned to position “super”. The compressor runtime is consequently unlimited. The super function contact withstands a max. load of 0.1 A NI (resistive).

Table 9: Relay contact conguration

 NOTE:

Relay contact ratings are the same for all thermostats in 077B series, including Service thermostats.

Pressure and temperature

Pressure data

Factory set barometric pressure for service thermostats: 760 mm Hg (1013 hPa).

 NOTE:

Thermostats made to order can be delivered with alternative barometric settings for e.g. high-altitude application, which should be considered in case a service thermostat is applied.

Temperature ranges

Service thermostats have these temperature settings

Table 10: 077B temperature settings

M10 x 0.75

ø 2,5 max

ø 5.95+0.05

7.8

11.5

17.5

58.5

0.8

Cold

Spindle shown in pos. "Warm"

270°

45°

Off

0.05 max

Warm

1.5

15.6

3.95+0.05

32.3

0.7 min

1.3

ø 2

Supplied

loose

4.8 x 0.8

6.3 x 0.8

Danfoss

77B214

Service kit, type B0 - B62

Dimensions

Figure 7: Dimensions

Type

Warm

cut-out [°C]

Warm

cut- in [°C]

Warm signal

di. [°C]

Warm

defrost [°C]

Cold

cut-out [°C]

Cold

cut-in [°C]

Cold signal

cut-in [°C]

Cap. tube

length [m]

Pack format

Qty/ pack

Code no.

-5.5 °C

2.0 °C

-25.0 °C

-13.5 °C

1.3 m

Multi pack

40 pc

077B7001

-15.0 °C

-7.8 °C

-32.5 °C

-21.0 °C

2.3 m

Multi pack

40 pc

077B7005

6.0 °C

11.5 °C

-8.5 °C

-1.0 °C

2.0 m

Multi pack

40 pc

077B7008

B02

-1.0 °C

3.5 °C

-11.0 °C

-5.5 °C

1.5 m

Multi pack

40 pc

077B7004

B20

-17.0 °C

-10.0 °C

4.0 °C

-34.5 °C

-24.0 °C

-18.0 °C

2.3 m

Multi pack

40 pc

077B7006

-17.0 °C

-10.0 °C

4.0 °C

-34.5 °C

-24.0 °C

-19.0 °C

2.3 m

Multi pack

40 pc

077B7007

-7.5 °C

0.0 °C

6.0 °C

-22.0 °C

-12.0 °C

1.3 m

Multi pack

40 pc

077B7002

B62

-11.0 °C

3.5 °C

-27.5 °C

3.5 °C

1.6 m

Multi pack

40 pc

077B7003

Type

Warm

cut-out [°F]

Warm

cut- in [°F]

Warm signal

di. [°F]

Warm

defrost [°F]

Cold

cut-out [°F]

Cold

cut-in [°F]

Cold signal

cut-in [°F]

Cap. tube

length [m]

Pack format

Qty/ pack

Code no.

22.1 °F

35.6 °F

-13.0 °F

7.7 °F

51.2 in

Multi pack

40 pc

077B7001

5.0 °F

18.0 °F

-26.5 °F

-5.8 °F

90.5 in

Multi pack

40 pc

077B7005

42.8 °F

52.7 °F

16.7 °F

30.2 °F

78.7 in

Multi pack

40 pc

077B7008

B02

30.2 °F

38.3 °F

12.2 °F

22.1 °F

59.1 in

Multi pack

40 pc

077B7004

B20

1.4 °F

14.0 °F

-30.1 °F

-11.2 °F

90.5 in

Multi pack

40 pc

077B7006

1.4 °F

14.0 °F

-30.1 °F

-11.2 °F

90.5 in

Multi pack

40 pc

077B7007

18.5 °F

32.0 °F

42.8 °F

-7.6 °F

10.4 °F

51.2 in

Multi pack

40 pc

077B7002

B62

12.2 °F

38.3 °F

-17.5 °F

38.3 °F

63.0 in

Multi pack

40 pc

077B7003

Service kit, type B0 - B62

Ordering

Packing format denitions

• Single pack contains 1 item.

• Multipack contains several items, individually packed, so that customers can purchase 1 item and receive all

relevant documentation.

• Industrial pack contains several items that are not individually packed. Industrial packs cannot be broken down,

and will only contain documentation on pack level, not on item level.

• Pallet pack contains several items on a pallet.

Service kits

Ordering data is provided in two separate tables, one with relevant selection critera in °C and a second table with relevant selection criteria in °F.

SI units

Table 11: Ordering 077B service thermostats, °C data

Imp. units

Table 12: Ordering 077B service thermostats, °F data

Accessories and spare parts

Spare parts

077B thermostats are not serviceable, and no spare parts are available.

Accessories

Danfoss oers a wide range of accessories in various colours, including items like dial plates, washers and knobs. In the list you will nd a selection, but for specialized items contact your local Danfoss representative.

Type Designation

Item no.

Packing format

Qty/pack

Code no.

Dial plate6Industrial pack

475 pc

077B8943

Screw M4 x 67Industrial pack

2.000 pc

077B8945

Handknob, white1Industrial pack

480 pc

077B8960

Mounting plate, low4Industrial pack

500 pc

077B8941

Washer, white2Industrial pack

480 pc

077B8970

Handknob, white Countersinked

Industrial pack

480 pc

077B8961

Nut

Industrial pack

1.500 pc

077B8992

Mounting plate4Industrial pack

500 pc

077B8842

Washer, black, White print 0-7

Industrial pack

480 pc

077B8976

Washer, white, Black print 0-7

Industrial pack

480 pc

077B8973

Terminal cover5Industrial pack

100 pc

077B8901

Washer, white, Black print 0-9

Industrial pack

480 pc

077B8974

Handknob, black Countersinked

Industrial pack

480 pc

077B8963

Dial plate6Industrial pack

575 pc

077B8942

Washer, black2Industrial pack

480 pc

077B8971

Mounting plate4Industrial pack

500 pc

077B8925

Mounting plate4Industrial pack

500 pc

077B8940

Service kit, type B0 - B62

Figure 8: Accessories

Table 13: Thermostat accessory

File name

Document type

Document topic

Approval authority

БЛ08.В.01620

Electrical - Safety Certicate

LVD

EAC RU C-DK

C 1162N - CAT 0673.14

Electrical - Safety Certicate

BEAB

UL E31024

Electrical - Safety Certicate

MD2012.2 EBD Rev. A2

Manufacturers Declaration

Packaging Directive/RoHS

Danfoss

EU.D 2018.11.A1

EC Declaration

LVD

Danfoss

IB-12-8-100

Explosive - Safety Certicate

IBExU

UA.089.D.00185-17

UA Declaration

EMCD/LVD

LLC CDC EURO-TYSK

IB-14-8-057

Explosive - Safety Certicate

Grilon

IBExU

China RoHS.A01

Manufacturers Declaration

China RoHS

Danfoss

MD2017 REACH.02

Manufacturers Declaration

REACH

Danfoss

Service kit, type B0 - B62

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Electromechanical cold controls are generally classied as individual components, also when assembled in refrigeration appliances. Hence some regional authorities stipulate cold controls to be subject to an individual approval.

Table 14: Certicates, declarations, and approvals

ISO certication

Danfoss Appliance Controls is certied by Bureau Veritas in ISO14001, ISO9001 and ISO45001.

Online support

Danfoss oers a wide range of support along with our products, including digital product information, software, mobile apps, and expert guidance. See the possibilities below.

The Danfoss Product Store

The Danfoss Product Store is your one-stop shop for everything product related—no matter where you are in the world or what area of the cooling industry you work in. Get quick access to essential information like product specs, code numbers, technical documentation, certications, accessories, and more. Start browsing at store.danfoss.com.

Find technical documentation

Find the technical documentation you need to get your project up and running. Get direct access to our ocial collection of data sheets, certicates and declarations, manuals and guides, 3D models and drawings, case stories, brochures, and much more.

Start searching now at www.danfoss.com/en/service-and-support/documentation.

Danfoss Learning

Danfoss Learning is a free online learning platform. It features courses and materials specically designed to help engineers, installers, service technicians, and wholesalers better understand the products, applications, industry topics, and trends that will help you do your job better.

Create your Danfoss Learning account for free at www.danfoss.com/en/service-and-support/learning.

Get local information and support

Local Danfoss websites are the main sources for help and information about our company and products. Find product availability, get the latest regional news, or connect with a nearby expert—all in your own language.

Find your local Danfoss website here: www.danfoss.com/en/choose-region.

Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specications already agreed. All trademarks in this material are property of the respective companies. Danfoss and the Danfoss logotype are trademarks of Danfoss A/S. All rights reserved.

Danfoss B0 - B62 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual