ST11 SERIES (NEW)

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ST11 SERIES (NEW)

$200.00

  • The first China-made round shape thermal protector got UL, TUV and CQC certifications and broke 30 years’ monopoly of German protectors.
  • Thermal protection  ST01 is in a well-sealed design，which can prevent product failure from the vacuum impregnation process.
  • Thermal protection switch is Small in size and suitable to be embedded inside the coil of electric motors.
  • motor thermal overload switch with a metal casecan bear up to 50KG coil shaping pressure, which has high thermal conductivity and temperature sensitivity.
  • Pure temperature action type products, bimetal-disc without current and heat effect, accurate temperature control.
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Description

Applications:

• Electric motors
• Transformers
• Coils
• Electronics, sensor

 

Integration of Resources:

Integrating global supply chain resources, we purchase bimetal discs from EMS, the world’s largest manufacturer of bimetal disc materials, and purchase cases from German suppliers that use stamping and forming technology.

  • The spring material comes from Japan NGK and is manufactured by a Japanese stamping supplier.
  • The case and spring adopt silver plating technology, which greatly reduces the contact resistance.
  • The key components of the bimetallic disareproduced by fully automatic forming equipment, separated by tunnel furnace separation equipment, with good consistency and stable performance.

Advantages:

Contact: Silver-nickel alloy, with long lifetime, over-current capability
  Spring: Beryllium copper imported from Japan, with good elasticity
 Case: Metal case, better thermal conduction, precision control within 0.02mm, the thickness of silver plated on the surface up to 3um

 

Certification:

 AgencyStandard NO.File NO.ApplicationNST(℃)
CQC

GB14536.3

GB14536.10

CQC22002362265Motor Protector Thermostat60-180°C
CBIEC 60730-2-2CN58245Thermal Motor Protector60-180°C
ULCertification in progressCertification in progressThermal Motor Protector60-165°C

 

Many clients specify Saftty as their first choice for thermal protectors. Contact us now and we will find the right solutions for you.

Specification

Technical Data

 

Normally closed/Normally open

Nominal switching temperature, in 5K-step(TK)

60~250°C

Tolerance-Standard

±5K/±8K/±10K

Reset temperature range

-35K±15K

Max.operating voltage

500VAC/14VDC

Working current

250VAC,2.5A

Cycles at 250VAC/2.5A cosφ1.0

10000

Cycles at 250VAC/6.3A cosφ1.0

3000

Cycles at 250VAC/7.5A cosφ1.0

300

Cycles at 250VAC/1.6A cosφ0.6

10000

Contact resistance(lead length 55mm)

＜50mΩ

Insulation voltage

2KV

Insulation sleeve length “a”

15mm

Diameter “d”

9.5mm

Height “h”

4.3mm

Lead wire-electric

UL3398 AWG22 White (300V 150°C)

Lead wire-teflon

UL10362 AWG22 Yellow (600V 250°C)

Outgoing line length-standard

(The drawing as below)

L1=L4=520±10mm
L2=L3=200±5mm

 

Drawing

 

Many clients specify Saftty as their first choice for thermal protectors. Contact us now and we will find the right solutions for you.






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