MachineU > China Products > Electrical Equipment & Supplies > Low Voltage Products > Fuses
TB 1574 Thermostatic Bimetal Strip Medium Sensitivity 0.10-2.00mm for Circuit Breaker Thermal Overload Relay
TB 1574 Thermostatic Bimetal Strip Medium Sensitivity 0.10-2.00mm for Circuit Breaker Thermal Overload Relay
Specifications
Specific Thermal Deflection (20-130°C) :
15.0 ± 5% × 10⁻⁶/°C
Payment Terms :
T/T,L/C,Western Union
Max Operating Temperature :
300°C
Form Available :
Strip, Coil, Sheet, Disc, Custom Stamped Parts
Density :
7.8 g/cm³
Thickness Range :
0.10 mm - 2.00 mm
Resistivity (20°C) :
74 ± 5% μΩ·cm
Price :
Negotiable
Linear Temperature Range :
-20°C to 200°C
High Expansion Layer :
Mn-Ni-Cu Alloy (Mn72Ni10Cu18)
Delivery Time :
7-15 working days after order confirmation
Hardness (HV) :
260-330 (High Expansion Side)
Surface Condition :
Bright / Polished / Pickled
Place of Origin :
Shanghai, China
Packaging Details :
Wooden case or plywood pallet with moisture-proof wrapping, custom packaging available upon request
Low Expansion Layer :
Ni36Fe Invar Alloy
Model Number :
TB 1574
Certification :
ISO 9001:2015, RoHS
MOQ :
50 Kilograms
Grade :
TB 1574
Width Range :
5 mm - 300 mm
Brand Name :
Huona
Elastic Modulus (E) :
≥ 140 GPa
Supply Ability :
30000 Kilograms per Month
Description
TB 1574 Thermostatic Bimetal Strip Medium Sensitivity 0.10-2.00mm for Circuit Breaker Thermal Overload Relay
TB 1574 Medium Sensitivity Thermostatic Bimetal Strip

The TB 1574 thermostatic bimetal strip is Huona's flagship general-purpose grade, offering an optimal balance of thermal sensitivity, electrical resistivity, and mechanical strength. Composed of a high-expansion Mn-Ni-Cu alloy layer bonded to a Ni36Fe Invar low-expansion layer, this grade has become the industry standard for a broad spectrum of thermal actuation and protection applications. With decades of proven field reliability, TB 1574 is the go-to choice for high-volume circuit breaker and thermal relay manufacturers worldwide.

Key Features
  • Balanced Performance: Specific thermal deflection of 15.0 × 10⁻⁶/°C combined with 74 μΩ·cm resistivity provides an ideal balance between mechanical responsiveness and electrical characteristics.
  • Proven Reliability: Trusted by major electrical component manufacturers globally for consistent performance across millions of thermal cycles.
  • Cost-Effective: Optimized alloy composition using readily available raw materials ensures competitive pricing without compromising quality.
  • Broad Application Window: Linear temperature range from -20°C to 200°C with maximum intermittent exposure up to 300°C.
  • Excellent Formability: Medium hardness (260-330 HV) allows easy stamping, bending, and forming into complex shapes without cracking.
  • Uniform Thickness Tolerance: Precision cold-rolling ensures thickness tolerance within ±0.005 mm for consistent deflection behavior.
  • Flexible Supply Options: Available as continuous coil, precision-cut strip, blanked discs, or finished stamped components.
Technical Specifications
Grade TB 1574
Specific Thermal Deflection (20-130°C) 15.0 ± 5% × 10⁻⁶/°C
Resistivity (20°C) 74 ± 5% μΩ·cm
Elastic Modulus (E) ≥ 140 GPa
Density 7.8 g/cm³
Linear Temperature Range -20°C to 200°C
Max Operating Temperature 300°C
Hardness (HV) - High Expansion Side 260 - 330
Thickness Range 0.10 mm - 2.00 mm
Width Range 5 mm - 300 mm
High Expansion Layer Mn72Ni10Cu18 (Mn-Ni-Cu Alloy)
Low Expansion Layer Ni36Fe (Invar Alloy)
Surface Condition Bright / Polished / Pickled
Form Available Strip, Coil, Sheet, Disc, Custom Stamped Parts
Typical Applications
  • Miniature circuit breakers (MCB) and molded case circuit breakers (MCCB)
  • Thermal overload relays for motor protection
  • Fluorescent lamp starters and glow switches
  • Room thermostats and HVAC temperature controls
  • Electric water heater and coffee maker thermostats
  • Automotive cooling fan thermal switches
  • Battery pack over-temperature protection strips
  • Time-delay relays and flasher units
Why Choose Huona TB 1574?

As an ISO 9001:2015 certified manufacturer, Huona delivers TB 1574 bimetal strip with consistent quality that meets or exceeds international standards. Our vertically integrated production process—from alloy melting and hot rolling to precision cold rolling and slitting—enables strict quality control at every stage. Each production lot undergoes comprehensive testing including thermal deflection measurement, resistivity verification, and 100% visual inspection. With a monthly production capacity of 30,000 kg, we can support both small trial orders and high-volume production runs. Our engineering team provides complimentary technical consultation on material selection, stamping parameters, and heat treatment optimization. Contact Huona today for samples and competitive pricing.

Send your message to this supplier
Send Now

TB 1574 Thermostatic Bimetal Strip Medium Sensitivity 0.10-2.00mm for Circuit Breaker Thermal Overload Relay

Ask Latest Price
Watch Video
Product Detail
Specific Thermal Deflection (20-130°C) :
15.0 ± 5% × 10⁻⁶/°C
Payment Terms :
T/T,L/C,Western Union
Max Operating Temperature :
300°C
Form Available :
Strip, Coil, Sheet, Disc, Custom Stamped Parts
Density :
7.8 g/cm³
Thickness Range :
0.10 mm - 2.00 mm
Contact Supplier
video
TB 1574 Thermostatic Bimetal Strip Medium Sensitivity 0.10-2.00mm for Circuit Breaker Thermal Overload Relay

Huona (Shanghai) New Material Co., Ltd.

Verified Supplier
2 Years
shanghai, shanghai
Since 2008
Business Type :
Manufacturer, Exporter
Main Products :
Low Expansion Alloy, Soft Magnetic Alloy, Elastic Alloy
Total Annual :
8000000-100000000
Employee Number :
100~120
Certification Level :
Verified Supplier
Discover similar products
View More

Find Similar Products By Category:

Supplier Homepage Products Thermal Bimetal
MachineU China Products Electrical Equipment & Supplies Low Voltage Products Fuses
Contact Supplier
Submit Requirement