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Series: T9-817

New_Logo Free Sample Request

Circuit Breaker for Equipment thermal vertical, THT terminals for PCB mounting, 1 pole

7 Variants

Approvals and Compliances

Environment_Safety RoHSEnvironment_Safety China-RoHS

Description T9-817


  • Thermal circuit breaker
  • 1-pole
  • On request available with elevaled glow-wire ratings
  • THT connectors

Unique Selling Proposition

  • Reset type
  • Cycling trip-free release
  • Compact design
  • Different mounting possibilities


  • Approval Reference Type: T9
  • IEC 60934
  • UL 1077
  • CSA C22.2 No. 235
  • GB 17701


  • Power supplies
  • Uninterruptible power supply
  • Power tools
  • Industrial appliances
  • HVAC
  • Household appliances
Date Category Subcategory Title Download
21/07/2016 Products
T9-817C-10 PCS
21/07/2016 Products
T9-817C-4 … 8 PCS
21/07/2016 Products
T9-817C-12 PCS

Rated Voltage AC

240 V, 50 / 60 Hz 

Rated Voltage DC

48 V 

Rated current

4-12 A 

Conditional short circuit capacity

IEC: Inc, PC1, AC 240 V: 2 kA 

UL / CSA: SC, AC 240 V DC 48 / 32 V: 2 kA, C1 

Degree of protection front side

IP 40 

Endurance minimum

IEC: 200% Ir, cos φ 0.6: min. 50 switching cycles 

Endurance typical

4-8 A: 150% Ir, cos φ 0.9:
2500 switching cycles

10-12 A: 150% Ir, cos φ 0.9:
6000 switching cycles

Dielectric Strength

1500 VAC

Insulation Resistance

500 VDC > 1000 MΩ 

Ambient temperature

5-12 A: -5 °C to 60 °C 

4 A: -5°C to 50 °C 

Soldering Methods



245 °C / 3 sec acc. to IEC 60068-2-20 / Test Ta, method 1

Resistance to Soldering Heat

260 °C / 10 sec acc. to IEC 60068-2-20 / Test Tb, method 1A


approx. 12.5 g 

Detailed information on product approvals, code requirements, usage instructions and detailed test conditions can be looked up in  
General Product Information


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.

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.

Dimension [mm]

Typical internal resistance

Rated Current [A] Internal Resistance [mΩ]
4 26.3
5 24.1
6 19.0
7 18.0
8 14.8
10 13.0
12 12.7


Time in Seconds
Multiple of Rated Current In

Reference Temperature +23°

Effect of ambient temperature

Ambient temperature [°C] Correction factor
-5 0,85
+10 0,95
+23 1,00
+40 1,08
+60 1,21

Short Table of Variants T9-817

connection type Rated current Order Number

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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

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Distributor Stock Check

Stock Check Distributor

Solder, THT 4 A 3-101-228 ...
Solder, THT 5 A 3-101-227 ...
Solder, THT 6 A 3-101-226 ...
Solder, THT 7 A 3-101-232 ...
Solder, THT 8 A 3-101-231 ...
Solder, THT 10 A 3-101-230 ...
Solder, THT 12 A 3-101-229 ...

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