Zhejiang, China
Business Type:
Main Products:
Management System Certification:
ISO 9001, ISO 14001, OHSAS/ OHSMS 18001
OEM/ODM Service
Sample Available
MEI Awards

Thermal Overload Relay, Thermal Relay, Relay manufacturer / supplier in China, offering CE and RoHS Approved Thermal Overload Relay, Ice60947-4 and RoHS Approved Cc1 Series Contactor, Caw1 -3200 Acb Intelligent Universal Circuit Breaker and so on.

Gold Member Since 2005
Audited Supplier

CE and RoHS Approved Thermal Overload Relay

Get Latest Price
Purchase Qty. / Reference FOB Price
1,000-9,999 Pieces US $2.5-3
10,000+ Pieces US $2.4
Production Capacity: 500000 PCS/Month
Transport Package: 100PCS/CTN
Payment Terms: L/C, T/T, D/P, Paypal, Money Gram, Western Union
Theory: Thermal Relay
Usage: Car Relay, Household Appliances Relay, Communication Relay, Lathe Relay
Phase: 3
Electricity Type: Ac
Number of Pole: 3
Load: Medium Power Relay

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Basic Info

Model NO.: CTH22
Protective Characteristics: Open Relay
Action Principle: Electromagnetic Type
Size: Miniature
Type: Thermal Overload Relay
Named: Thermal Relay
Standard Type: Cth
IEC Standard: CE
Smaill Size: 44mm Width
Tripping Contact: 1no+1nc
Trademark: CHANA
Specification: CE ROHS
Origin: Yueqing Zhejiang
HS Code: 853649000

Product Description

Characteristics of thermal relay

-Be mounted with CMC-9, 12, 18, 22 contactor directly
-Be mounted by guide rail or screw through mounting support(AZ-22H)
-Smaill size: 44mm width
-1NO+1NC tripping contact
-Class 10A tripping standard
-Phase-failure protection type: CTK
-Standard type: CTH
-Applicable ambient temperature -5-40
-Manual/automatic reset
-Design of trip free
-Bimetal element type

General of thermal relay:

Thermal Relay is a kind of automatic switching component with isolation function, which is widely used in
Remote control, remote measuring, telecom, automatic control, integration of machinery and
Electrification, electric and electronic equipments. It's one of the most important controlling

Generally, thermal relays have the inductive organ (input part) that can reflect the input value (such as
Current, voltage, power, impedance, frequency, temperature, pressure, speed, light etc. ); Have
The executive organ (output part) that has the capability of switching the controlled circuit "on" or
"off"; Between the input and output parts, there is the medium organ (actuator) that can make
Input value coupling-isolation and drive the output part.

As a kind of controlling component, generally, relay mainly has the following functions
1) To enlarge the range of control. E. G., when the controlling signal of a multi-contacts relay
Reaches a certain value, according to the different forms of the contacts, it can synchronously
Change over, close or open several circuits.
2) Enlargement. E. G., sensitive relays and medium relays can control a high-power circuit with
Minute controlling power.
3) To integrate signals. E. G., when several controlling signals are put into a multi-winding relay in
The stated form, the relay can realize the expectant controlling function by analyzing the different
4) Automatization, remote control and monitoring. E. G., in automatic equipments, the relays and
Other electronic components can constitute program-controlled circuit, realizing the automatic

Applications of thermal relay:

Prepayment energy meter
Smart meter
Concentrated meter reading system
Street lamp control system
Compound switch, Combination switch
Automatic control device/ system
AMR system
Elevator control

1. We Are an electronics components manufacturer
2. We have 27 years experience of manufacturing Relays and other electronic components.
3. Based on ISO 9001 & ISO14000 quality control system as our production standard;
4. We have completely sales service system, ensure every detail is going smooth.
5. We have new designed products each year by our R&D Department.

Rated current254093140
Rated insulation voltage690690690690
Loss phase monitoring
Manual/automatic reset 
Ambient temperature compensation

Tripping indicators
Test button
Stop button
Installation Plug-inPlug-inPlug-inPlug-in
Auxiliary contact1NO+1NC1NO+1NC1NO+1NC1NO+1NC
AC-15 220V Rated current (A)2.732.732.732.73
AC-15 380V Rated current (A)1.581.581.581.58
DC-15 220V Rated current (A)
Wire cross-section (mm 2 )Main    circuitSingle core1~44~104~354~35
 Auxiliary circuitSingle core0.5~2.50.5~2.50.5~2.50.5~2.5

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