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TA45-3RAU Circuit Breaker for Equipment thermal, 3 pole, Rocker actuation, with auxiliary contact, with undervoltage

Series: TA45-3RAU

Circuit Breaker for Equipment thermal, 3 pole, Rocker actuation, with auxiliary contact, with undervoltage

Free Sample Request


  • Thermal circuit breaker
  • 2 pole thermal overload protection
  • Positively trip-free release
  • High configurability
  • Rocker non-illuminated or illuminated
  • Snap-in version
  • Quick connect terminal 6.3 x 0.8 mm or screw clamp terminal M3.5 x 6 mm (lineside P1, P2)


  • Power tools
  • Industrial appliances
  • Power supplies

Rated Voltage AC

AC 400 VAC

Rated current range AC

0.05 - 12 A

Degree of Protection

from front side IP40 acc. to IEC 60529

Dielectric Strength

4 kVAC

Insulation Resistance

500 VDC > 100 MΩ


mechanical: 50'000 switching cycles

AC: 1 x Ir:
50'000 switching cycles


AC: min. 40 trips
@ 6 x Ir

Allowable Operation Temp.

-10 °C to 55 °C

Vibration Resistance

± 0.75 mm @ 10 - 60 Hzacc. to IEC 60068-2-6, test Tc10 G @ 60 - 500 Hzacc. to IEC 60068-2-6, test Tc

Shock Resistance

30 G / 18 msacc. to IEC 60068-2-27, test Ea

Possible Tripping Types

Thermal  Undervoltage release  Remote trip  Mechanical lock-out latch

Actuation Type



55 - 60 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: TA45

Approval Logo Certificates Certification Body Description
Approval marks VDE VDE VDE Certificate Number: 40019880
Approval marks cURus UL UL File Number: E71572
Approval marks ccc CCC CCC Certificate Number: 2013010307660082

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 CSA_Certification_Body Designed according to CSA C22.2 No. 235 Supplementary Protectors
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_e_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

Numer porządkowy

Numer porządkowy Unique part number for placing an order

Klucz konfiguracji

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


Comment Rysunki CAD służą wyłącznie do modelowania.

Model Description

Model Description









Dimension [mm]

Undervoltage release, remote trip release, auxiliary contact

A) Quick connect terminal, IEC 61210, A6.3-0.8 mm
B) Quick connect terminal, IEC 61210, A2.8-0.8 mm␉

Cut-out and pin-out

Cut-out snap-in type

1) Assemble
2) edge must be sharp

*) Auxiliary contact / 3 pole


2pole thermal overload protection, Auxiliary contact

2pole thermal overload protection, Auxiliary contact, Shunt terminal


Time in Seconds
Multiple of Rated Current In

Reference Temperature +23°
Time in Seconds
Multiple of Rated Current In

Reference Temperature +23°

Effect of ambient temperature

Ambient Temperature [°C] Correction factor
-10 0.89
-5 0.91
0 0.92
+23 1.00
+30 1.03
+40 1.08
+55 1.16

Auxiliary contact (changeover)

Rated Voltage 28 VDC 60 VDC 240 VAC
Rated current max. 10 A resistive load max. 2 A resistive load max. 2 A cos φ 0.7

Undervoltage release

Max. operating voltage             1.1 Ue
Rated operating voltage Ue 5 V 12 V 24 V 48 V 120 V 240 V 400 V 1)
Current consumption (± 10%) 10.5 mA 16.5 mA 17.0 mA 3.2 mA 3.7 mA 3.1 mA 2.65 mA
Highest reset level             0.85 Ue
Lowest trip level             0.20 Ue
Trip delay             20 ms - 50 ms
Impulse withstand voltage (1.2 / 50 µs)             ≥4 kV
1) only for 3pole

Remote trip

Permissible impuls duration of the make contact (no) Between terminal C and P1 unlimited
Electrical load of the make contact (no) Current max. 12 mA / power max. 1.1 W  

Date Podkategoria Język Title Download
White Paper Angielski (English) White Paper Selecting rated currents for CBE
PCN Angielski (English) TA45 PCN
PCN Angielski (English) TA45 Rocker and Push Button, 2-, 3-Pole
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