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TM12-MSM T12-MSM - Thermal-magnetic circuit breaker with metal actuator en IM0013738

Series: TM12-MSM

Circuit Breaker for Equipment thermal-magnetically with Metal Actuator

New_Logo Free Sample Request

6 Variants


  • TMF12-211 - Thermal-magnetic circuit breaker,
  • Metal switch non-illuminated and illuminated
  • 1 pole
  • Quick connect terminals 6.3 x 0.8 mm or screw terminals


  • Power supplies
  • Uninterruptible power supply
  • Power tools
  • Household appliances

Rated Voltage AC

AC 240 V: 50/60

Rated Voltage DC

28 V

Rated current range AC

0.05 - 15 A

Conditional short circuit capacity Inc

IEC: Inc, PC1, AC 240 V: 1 kA 

Dielectric Strength

50 Hz: > 1.5 kV
Impulse 1.2/50 μs: > 2.5 kV

Insulation Resistance

500 VDC > 100 MΩ

Endurance typical

2 x Ir: 5000 switching cycles

Reset type  AC : 2 x Ir , cos φ 0.6 :  DC : 2 x Ir , L/R = 2 - 3 ms :  50 switching cycles

Manual ON/OFF type  AC : 2 x Ir , cos φ 0.6 :   DC : 2 x Ir , L/R = 2 - 3 ms :  5000 switching cycles


IEC: min. 40 trips
@ 6 x Ir, cos φ 0.6

UL / CSA: min. 50 trips
@ 1.5 x Ir, cos φ 0.75

Allowable Operation Temp.

-5 °C to 60 °C

Vibration Resistance

± 0.75 mm @ 5 - 60 Hz
acc. to IEC 60068-2-6, test Fc
7 G @ 60 - 500 Hz
acc. to IEC 60068-2-6, test Fc

Shock Resistance

60 G / 18 ms
acc. to IEC 60068-2-27, test Ea

Tripping Type


Actuation Type

Manual ON/OFF 

Shock Protection

IK 07 

Tightening Torque Stainless Steel Nut

12 Nm for thread M19, 16 Nm for M22 

Salt Spray Test (acc. to DIN 50021-SS)

24 h / 48 h / 96 h Residence Time 

Supply Voltage

24 VDC Ring Illumination without series resistor Point Illumination


ca. 55 g

Detailed information on product approvals, code requirements, usage instructions and detailed test conditions can be looked up in  Details about Approvals
SCHURTER products are designed for use in industrial environments. They have approvals from independent testing bodies according to national and international standards. Products with specific characteristics and requirements such as required in the automotive sector according to IATF 16949, medical technology according to ISO 13485 or in the aerospace industry can be offered exclusively with customer-specific, individual agreements by SCHURTER.


The approval mark is used by the testing authorities to certify compliance with the safety requirements placed on electronic products.

Approval Reference Type: TM12

Approval Logo Certificates Certification Body Description

Product standards

Product standards that are referenced

Organization Design Standard Description
Partners IEC_Certification_Body Designed according to IEC 60934 Circuit-breakers for equipment (CBE)
Partners UL_Certification_Body Designed according to UL 1077 Standard for Supplementary Protectors for Use in Electrical Equipment
Partners CCC_Certification_Body Designed according to GB 17701 Circuit-breaker for equipment

Application standards

Application standards where the product can be used

Organization Design Standard Description
Partners IEC_Certification_Body Designed for applications acc. IEC/UL 60950 IEC 60950-1 includes the basic requirements for the safety of information technology equipment.


The product complies with following Guide Lines

Identification Details Initiator Description
Approval marks CE Selbsteklaration SCHURTER AG The CE marking declares that the product complies with the applicable requirements laid down in the harmonisation of Community legislation on its affixing in accordance with EU Regulation 765/2008.
Environment_Safety RoHS_Logo_color_CMYK_tif SCHURTER AG Directive RoHS 2011/65/EU, Amendment (EU) 2015/863
Environment_Safety China_RoHS_50_non_konform_eps SCHURTER AG The law SJ / T 11363-2006 (China RoHS) has been in force since 1 March 2007. It is similar to the EU directive RoHS.
Environment_Safety REACH SCHURTER AG On 1 June 2007, Regulation (EC) No 1907/2006 on the Registration, Evaluation, Authorization and Restriction of Chemicals 1 (abbreviated as "REACH") entered into force.




Type Corresponds to a product series and includes various distinct variants. On the type of descriptive data are summarized, eg in the data sheet


Ordernumber Unique part number for placing an order


Configuratietoets The configuration key of a product consists of the composite key values, which describe the different kinds of attribut distinction.


Comment CAD-tekeningen zijn alleen voor modelleerdoeleinden.

Model Description

Model Description









Dimension [mm]

TM12 MSM 19

1) only among MSM PI / RI quick connect terminal 2.8x0.5 mm
TM12 MSM 22

1) only among MSM PI / RI quick connect terminal 2.8x0.5 mm
TM12 MSM 22 screw version

1) only among MSM PI / RI quick connect terminal 2.8x0.5 mm
MSM 19 LA ST /  MSM 19 LA RI

Drilling diagram
MSM 19 LA LE /  MSM 19 LA PI / MSM 19 LA RI optional

Drilling diagram

MSM 22 LA ST /  MSM 22 LA RI

Drilling diagram
MSM 22 LA LE / MSM 22 LA PI / MSM 22 LA RI optional

Drilling diagram

Typical internal resistance TMF12

Rated Current [A] Internal Resistance [Ω]
0.05 335.00
0.50 4.37
1.00 1.23
2.00 0.369
3.00 0.181
4.00 0.097
5.00 0.055
6.00 0.044
7.00 0.0231
8.00 0.0227
9.00 0.0142
10.00 0.0123
11.00 0.012
12.00 0.012
13.00 0.0108
14.00 0.0091
15.00 0.0089
16.00 0.0071

Effect of ambient temperature

Ambient Temperature [°C] Correction factor
-5 0.87
0 0.90
10 0.95
23 1.00
30 1.05
40 1.12
50 1.20
60 1.30


Time in Seconds
Multiple of Rated Current In

Reference Temperature +23°

Point Illumination

Operating Data Forward Current max. Forward Voltage at 10 mA Forward Voltage at 8 mA Forward Voltage max.
LED red 30 mA 1,9 VDC   3,0 VDC
LED green 30 mA 2,1 VDC   3,0 VDC
LED blue 20 mA   3,7 VDC 4,5 VDC
Attention: Switches are delivered without series resistor.

The last three digits in the order number define the lettering:  
000 No Lettering
001-074 Standard Lettering
101- Customized Lettering
- Actuating elements in ESD safe packaging
- Screw nuts and sealing rings in a bag (enclosd in the box)
- Circuit breaker in a bag (enclosed in the box)

Short Table of Variants TM12-MSM Open complete table TM12-MSM

Circuit Breakers Order Number

Variant Details

The link on the respective order number refers to a separat tab with specific detailed information .
This assures better readable information of the selected product.
Change to the tab All Products in order to show details of another variant.
This approach offers to use generic alias link to the product details:
www.schurter.xx/art/ [Order Number]
where the following variables are used:
- xx is the country specific domain
- [Order Number]

A=Most Popular

A=Most Popular

Most popular products have the following customer benefits:
- previously ordered by multiple customers
- generally in stock for immediate delivery
- early adoption or mature life cycle
Contact us for availability on other product variants, lead-times vary:
Contact-Form Availability for all products can be searched real-time. Enter part number and required quantity:
Stock Check SCHURTER

Free Sample

Free Sample

Please ask for free sample in order to check if the products meets your requirement for your application. Send your delivery adress and your specific requirements.

Distributor Stock Check

Distributor Stock Check

The following links refers to the inquiry form for distributors stock information of the selected products. It allows checking for the available amount and optionally to place an order at your selected partner.
The stock availability at the distributors may also be called up separately and the desired product manually entered.
Stock Check Distributor

Type   Rated current   connection type            
TMF12-221-10 10 A Quick connect terminals 6.3 x 0.8 mm 4410.9013  A  ...
TMF12-221-16 16 A Quick connect terminals 6.3 x 0.8 mm 4410.9014  A  ...
TMF12-221-10 10 A Quick connect terminals 6.3 x 0.8 mm 4410.9015  A  ...
TMF12-221-16 16 A Quick connect terminals 6.3 x 0.8 mm 4410.9016  A  ...
TMF12-221-15 15 A Quick connect terminals 6.3 x 0.8 mm 4410.9020  A  ...
TMF12-221-15 15 A Quick connect terminals 6.3 x 0.8 mm 4410.9022 ...

Most Popular.

Coupler is included
Datum Subcategorie Taal Title Download
White Paper Engels (English) White Paper Selecting rated currents for CBE

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