CE Approved Electronic Type Thermal Overload Relay

Prod Model:	CTH22
Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe
Named:	Thermal Relay
Standard Type:	Cth
IEC Standard:	CE
Smaill Size:	44mm Width
Tripping Contact:	1no+1nc

Product Description

Description 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
Components.
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
Signals.
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
Operation
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

TECHNICAL DATA

Model

CTH22-D13

CTH22-D23

CTH22-D33

CTH22-D43

Rated current

25

40

93

140

Rated insulation voltage

690

690

690

690

Loss phase monitoring

√

√

√

√

Manual/automatic reset

√

√

√

√

Ambient temperature compensation

√

√

√

√

Tripping indicators

√

√

√

√

Test button

√

√

√

√

Stop button

√

√

√

√

Installation

Plug-in

Plug-in

Plug-in

Plug-in

Auxiliary contact

1NO+1NC

1NO+1NC

1NO+1NC

1NO+1NC

AC-15 220V Rated current (A)

2.73

2.73

2.73

2.73

AC-15 380V Rated current (A)

1.58

1.58

1.58

1.58

DC-15 220V Rated current (A)

0.2

0.2

0.2

0.2

Wire cross-section (mm 2 )

Main    circuit

Single core

1~4

4~10

4~35

4~35

Screw

M4

M4

M4

M4

Auxiliary circuit

Single core

0.5~2.5

0.5~2.5

0.5~2.5

0.5~2.5

Screw

M3.5

M3.5

M3.5

M3.5

Payment:
1. We usually use T/T (30% deposit before production and 70% to be paid against the copy of B/L).
2.If the Amount is small,you can pay to us by western union/Paypal/Money Gram.
3. L/C also acceptable
Warranty:
1. We provide 18 months warranty.
2. If the product is defective, please notify us within 10 days of delivery.
3. All products must be returned on their original condition, in order to qualify for a refund or exchange of goods
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