A Bimetal Thermostat Manufacturer Shaping the Future

Asahi Keiki Co., Ltd.
Product photos

Product

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US-118

  • Low-temperature type
  • High-temperature type
  • Splash-proof type
  • Round disc

Snapper, Snap-action

Features
Fully sealed (hermetic seal type), with anti-vibration springs (Type B), for low currents (Type C)
Uses
Bath boilers, water heaters, gas appliances, outboard motors, etc.
Register
Gas Inspection Certified Product (JIA)

Product photos

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  • US-118_BXHL
  • US-118_BXHL
  • US-118_BXHL
  • US-118BXHL

Thermostat Specifications

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Electrical Ratings (Resistive Load) B type : AC125V MAX.3A (MIN. 200mA)
C type : DC24V MAX.1A (MIN.DC5V 1mA)
C type : DC40V MAX.0.5A (MIN.DC5V 1mA)
N type : AC125V MAX.10A/DC12V MAX.13A/DC24V MAX.6.5A
Ⅰ.Temperature Setting Range
Ⅱ.Temperature Setting Tolerance (standard)
Ⅲ.Differential diff (standard)
Ⅰ.Temperature Setting Range
①0 to 50°C
②51 to 100°C
③101 to 150°C
④151 to 190°C
Ⅱ.Temperature Setting Tolerance (standard)
①±4°C/±5°C
②±4°C/±6°C
③±5°C/±7°C
④±6°C/±8°C
Ⅲ.diff (standard)
①15K
②15K
③20K
④25K
Circuit Resistance (Initial Value) B type : 70mΩ or less
C type : 10mΩ or less
N type : 50mΩ or less
Insulation Resistance 100MΩ or more (measured with DC500V megohmmeter)
Dielectric Withstand Voltage B type : AC1200V / 1 minute
C type : AC1000V / 1 minute
N type : AC1200V / 1 minute
Heat Resistance 190°C
Cold Resistance -20°C
Switching Endurance 10,000 cycles or more (at rated load)

Please contact us separately regarding specifications that exceed these.

Thermostat Model Code

US-118

1234

1Contact Material

B : Ag alloy contact C : Au crossbar contact N : Ag alloy contact(for high current)

2Contact Type

X : "OFF" when temperature rises Y : "ON" when temperature rises

3Terminal Type

H : For soldering(with φ2 hole)[ B type ] W : For welding [ C type ] I : For soldering(with φ2.5 hole) [ C type ]

4Holder Type

L : Surface type (mounting pitch 23mm) M : Surface type (mounting pitch 35mm) K : Recessed type (mounting pitch 23mm) I : Recessed type (mounting pitch 35mm) O : Without holder N : Cover with M4x0.7 screw
Model Examples
  • US-118BXHO

    Ag alloy contacts, terminals for soldering, without holder

  • US-118BXHL

    Ag alloy contacts, terminals for soldering, surface-mount holder

  • US-118CXWL

    Au Crossbar Contacts, Welding Terminals, surface-mount holder

  • US-118CXIM

    Au Crossbar Contacts, terminals for soldering, surface-mount holder

Thermostat Dimensions

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Please feel free to contact us with any questions about our products.

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