A Bimetal Thermostat Manufacturer Shaping the Future

Asahi Keiki Co., Ltd.
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Product

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US-603

  • General-purpose type
  • Manual reset type
  • Round disc

Snapper, Snap-action

Features
1/2 General-purpose manual reset type, compact high-capacity (U type), for low currents (K type)
Uses
Microwave ovens, heating appliances, water heaters, etc.
Register
CMJ (Voluntary Registration System for Electrical Equipment Parts and Materials) registered products; UL, C-UL, VDE (EN 60730), and CQC certified products

Product photos

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  • 603_UXRLQE-H
  • 603_UXRLQE-H
  • 603_UXRLQE-H
  • 603_UXTLKO-H
  • 603_UXTLKO-H
  • 603_UXTLKO-H
  • 603_UXTMAS-H
  • 603_UXTMAS-H
  • 603_UXTMAS-H

Thermostat Specifications

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Electrical Rating (Resistive Load) U type : AC125V MAX.15A (MIN.200mA)
U type : AC250V MAX.10A (MIN.200mA)
K type : DC30V MAX.1A(MIN.DC5V 1mA)
Ⅰ.Temperature Setting Range
Ⅱ.Temperature Setting Tolerance (Standard)
Ⅰ.Temperature Setting Range
①50 ~ 100℃
②101 ~ 150℃
Ⅱ.Temperature Setting Tolerance (Standard)
①±4℃
②±5℃
Circuit Resistance (Initial Value) U type : 50mΩ max.
K type : 10mΩ max.
Insulation Resistance 100MΩ min. (with DC500V megohmmeter)
Dielectric Strength U type : AC1500V / 1 min.
K type : AC1200V / 1 min.
Heat Resistance 150℃
Cold Resistance -20℃
Switching Endurance 5,000 cycles or more (at rated load)

Please contact us separately regarding specifications that exceed these.

Thermostat Model Code

US-603

12345 -6

1Contact Material

U : Ag alloy contact K : Au crossbar contact

2Contact Type

X : "OFF" when temperature rises

3Terminal Angle

R : Horizontal terminal T : Vertical terminal

4Terminal Type

L : Positive lock F250 series compliant (Size: 6.35×0.8 Material: Brass, Sn plated) M : Positive lock F187 series compliant (Size: 4.75×0.5 Material: Brass, Sn plated) S : For soldering

5Cover Material Holder Type

QO : Aluminum, Without holder QL : Aluminum, Free surface type (mounting pitch 24.5mm) KO : Aluminum, Recessed type (depth 5.0mm, 24.5mm) AS : Stainless steel, Surface type (mounting dimension 24mm) IO : Stainless steel, Recessed type (depth 4.6mm, 24.5mm) JO : Stainless steel, Recessed type (depth 5.2mm, 24.5mm) QD : Aluminum, Surface type (mounting pitch 30mm) SO : Brass, Screw mounting type [M3,M4,M5,6-32UNC,8-32UNC,10-32UNC]

6Standard Type

H : Safety standard compliant (U type)
Model Examples
  • US-603UXRMQO-H

    Horizontal F187 Terminal, Aluminum Cover, No Holder

  • US-603UXRLQL-H

    Horizontal F250 Terminal, Aluminum Cover, Holder Mount 24.5 mm

  • US-603UXTMQL-FB-H

    Vertical F250 Terminal, Aluminum Cover, Fixed Surface-Mount holder

  • US-603UXTLKO-H

    Vertical F250 Terminal, Aluminum Cover, Air Stream holder 5 mm 24.5 mm

  • US-603KXTSIO

    Vertical teminal for soldering, Stainless Steel Air stream holder, 4.6 mm 24.5 mm

List of International Safety Standards and Certification Specifications

Model Name Certification Name File No. Maximum temperature rating [°C] Control Method Cycle Voltage [V] Resistive load Inductive load FLA LRA
US-603U-H UL C-UL E52529 160 regulating (MR) 6,000 AC 125 15
AC 250 10
AC 120 5.8 34.8
AC 240 2.9 17.4
US-603U (603A) AC 120 12
US-603K E52529 160 regulating (MR) 6,000 DC 30 1
AC 120 125VA
US-603U-H VDE 40026555 160 thermal cut-out 6000 (MR) AC 250 10.1

Thermostat Dimensions

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

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