Wy250b-i Normally Close Automatic Reset Snap Switch Thermostat And Temperature Controlled Switch
Wy250b-i Normally Close Automatic Reset Snap Switch Thermostat And Temperature Controlled Switch
Wy250b-i Normally Close Automatic Reset Snap Switch Thermostat And Temperature Controlled Switch

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Wy250b-i Normally Close Automatic Reset Snap Switch Thermostat And Temperature Controlled Switch

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Product description

WY250B-I Normally close automatic reset Snap Switch Thermostat and temperature controlled switch
 

 

Description:

 

Changsheng WY-I series bulb & capillary thermostats are factory calibrated to a predetermined temperature range. This design offers a changeover thermal switch and an optional auxiliary switch that is useful for activation of an alarm or cooling fan. The principles of operation allow this design to be surprisingly cost effective and a leading choice for use in many applications where precision sensing is required while remaining on a tight budget. When temperature rises, the internal fluid located within the bulb expands through a capillary tube to an expandable diaphragm that is configured within the remote thermostat body. This diaphragm assembly activates the electrical contacts at the calibrated temperature set point. The WY-I series is available with a front auxiliary switch as optional.

 

 

Specifications:

 

  Normally close, open on temperature rise, automatic reset, Earth Terminal Option

Working voltage and current

16 Amps @ 240 Vac and 16 Amps @ 400 Vac

Ø Phial  diameter

3/6 mm

Cycles life

100,000 cycles

Open temperature

-35°C to 350°C  

Temperature Tolerance

±3°C, ±4°C, ±5°C, ±8°C, ±10°C, ±12°C

Differential Temperature

depending on open temperature

Contact resistance

≤100 m  

Capillary length

300~ 3000 mm; other lengths available upon request

Body temperature

T120 / T150 

Faston Terminal Connections

6,3x0,8 mm DIN46244

Contact Closure Resistance:

≤50mΩ

Insulation Resistance

≥100MΩ

Speed of response

1.0℃/min

.Min. electric current

200mA

 

 

Typical

 Model

Operating temperature

Switch

Voltage

(V)

Current

(A)

Maximum

Temperature

Sensing part(℃)

H

L

OFF(℃)

DIFF(K)

OFF(℃)

DIFF(K)

WY35A-Ⅰ

35±4

5±3

-35±4

5±3

400/250

16

70

WY75A-Ⅰ

75±3

5±3

25±5

5±3

400/250

16

110

WY110A-Ⅰ

110±4

6±4

60±8

6±3

400/250

16

120

WY190A-Ⅰ

190±8

8±4

50±8

8±4

400/250

16

160

WY250B-Ⅰ

250±10

10±5

120±12

10±5

400/250

16

250

        WY350A-Ⅰ

340±12

12±6

60±15

12±6

400/250

16

400

 

 

Applications:

 

■-10 / +16 Refrigeration
■-35 / +35 Fridge
■0 / 40 Ambient
■0 / 85 Boliers / Water heaters 
■0 / 93 Dishwashers
■30 / 110 Bain Marie
■60 / 200 Deep-fryer
■50 / 250 Oven
■50 / 300 Oven
■Other ranges upon request 

 

 

Competitive Advantage:

 

1. VDE CE CQC Approved.

2. A variety of coating configuration and shell materials are available according to different usages

3. RoHs (2002/95/EC Directive) compliant

4. Customized adjuster rod lengths and requirements are accepted

5. To supply adjustable knob, bezel and mounting screws

6. Adjustable temperature with positive contact separation

7. Mounting bushings/fittings and various sealing bushings are available

8. SPST or SPDT contact configuration

9. Durable stainless steel or copper construction

 

 

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