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T11-311 Circuit Breaker for Equipment thermal, Threaded neck type, Reset type, Quick connect terminals

Series: T11-311

Circuit Breaker for Equipment thermal, Threaded neck type, Reset type, Quick connect terminals

Free Sample Request

6 Variants


  • Threaded neck type 8 mm
  • Thermal circuit breaker
  • 1 pole
  • Reset type
  • Quick connect terminals 6.3 x 0.8 mm

Unique Selling Proposition

  • Compact design
  • Positively trip-free release
  • Available with cover
  • Different mounting possibilities


  • Power tools
  • Household Equipment
  • Power supplies and chargers
  • Industrial appliances

Rated Voltage AC

AC 240 VAC

Rated Voltage DC

48 VDC

Rated current range AC

0.05 - 16 A

Conditional short circuit capacity Inc

IEC: Inc, PC1, AC 240 V: 2 kA 

Short circuit capacity Icn

at In < 6.5 A/240 VAC : 8 x In 

at In ≥ 6.5 A/240 VAC : 96 A 

Degree of Protection

from front side IP40 acc. to IEC 60529

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: 500 switching cycles

Endurance minimum

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

± 1.5 mm @ 10 - 60 Hz
acc. to IEC 60068-2-6, test Fc
5 G @ 60 - 500 Hz
acc. to IEC 60068-2-6, test Fc

Shock Resistance

100 G / 6 ms
acc. to IEC 60068-2-27, test Ea

Tripping Type


Actuation Type

Reset type 


ca. 10 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: T11

Approval Logo Certificates Certification Body Description
Approval marks VDE VDE VDE Certificate Number: 99759
Approval marks cURus UL UL File Number: E71572
Approval marks ccc CCC CCC Certificate Number: 2012010307564692

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_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.


Picture(s) Selection of product pictures to display a specific variant of the type


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

Order Number

Order Number Unique part number for placing an order

Configuration key

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


Comment CAD drawings are for modeling purposes only

Model Description

Model Description Abbreviated description of the CAD model


IGS Also mentioned as IGES ( Initial Graphics Exchange Specification). Common program indipendent interchange format for 3D CAD data.


Step Also mentioned as STEP ( Standard for the Exchange of Product Model Data). Common program indipendent interchange format for 3D CAD data standardized according ISO standard.


Parasolid Parasolid modeling kernel is a 3D CAD systems. It is developed by a separate business unit within the Unigraphics Solutions (UGS), now Siemens PLM Software.


DXF (Drawing Interchange Format) is a specified by the Autodesk file format for CAD data exchange, and was developed for the 2D-CAD program AutoCAD. A DXF file describes a CAD model as plain text to the ASCII standard.

T11-311-0.05 - T11-311-7.5 0.05 - 7.5 A
T11-311-0.05-TZZ01 - T11-311-7.5-TZZ01 0.05 - 7.5 A
T11-311-8 - T11-311-16 8 - 16 A
T11-311R-0.05 - T11-311R-7.5 0.05 - 7.5 A
T11-311R-8 - T11-311R-16 8 - 16 A

Dimension [mm]


1) max. torque 0.6Nm


Rated current ≤7,5 A

Rated current >7,5 A

Shunt terminal T11-...N ≤6,5 A

Typical internal resistance per pole

Rated Current [A] Internal Resistance [Ω]
0.05 380.000
0.50 5.200
1.00 1.350
2.00 0.300
3.00 0.130
4.00 0.080
5.00 0.040
6.00 0.040
7.00 0.020
8.00 0.012
9.00 0.012
10.00 0.011
11.00 0.0095
12.00 0.0095
13.00 0.0085
14.00 0.0085
15.00 0.0075
16.00 0.0075


Time in Seconds
Multiple of Rated Current In

Reference Temperature +23°

Effect of ambient temperature

Ambient Temperature [°C] Correction factor
-5 0.87
0 0.90
+10 0.95
+23 1.00
+30 1.04
+40 1.10
+50 1.15
+60 1.20

Short Table of Variants T11-311 Open complete table T11-311

Rated current Construction variants 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

  Shunt terminal   Setting indication            
1.0 4400.0063  A  ...
3.0 A 4400.0345  A  ...
1.2 A 4400.0471 ...
3.0 A 4400.0523 ...
4.5 A 4400.0665 ...
2.5 A 4400.0730 ...

Most Popular.

Date Subcategory Language Title Download
White Paper English White Paper Selecting rated currents for CBE
PCS English T11-311 < 8A PCS
PCS English T11-311 Product Content Sheet
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