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Home Product STMT-T-3-125 High-Temperature Thermal Switch Sensor for HVAC & Medical Devices
screwdriver-3-125

STMT-T-3-125 High-Temperature Thermal Switch Sensor for HVAC & Medical Devices

STMT-T-3-125 thermal protector
STMT series thermal switch
125C temperature controller
STMT-T-3-125
STMT-T-3-125 thermal protector from the STMT series thermal switch line ensures precise 125C temperature controller performance, designed for reliable thermal cutoff and equipment protection in high-temperature environments. Compact, durable, and ideal for industrial or electrical applications requiring automatic overheat safety.
Categories:Tools & Accessories
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Product Description

The STMT-T-3-125 thermal protector is part of the STMT series thermal switch family, designed as a compact 125°C temperature controller for precision thermal management. It operates within a voltage range of 12-24VDC and supports a wide ambient temperature range of -40°C to 125°C. This device features a single input for temperature sensing and one relay output rated for 5A, directly interfacing with up to three external modules via screw terminals. It integrates a basic communication interface compatible with RS485 for system integration. Widely used in industrial automation, HVAC systems, and power equipment, the STMT-T-3-125 offers reliable overheat protection with ±2°C accuracy. Its compact design (35mm x 25mm housing) suits space-constrained installations, though lacks advanced programmability. The built-in 500mAh backup battery ensures brief operation during power interruptions, while its non-contact infrared sensor enables a 3-5m detection range. Key advantages include robust durability and fast response, though its fixed temperature setting limits customization.
Parameter Specification
Model STMT-T-3-125 thermal protector
Series STMT series thermal switch
Temperature Setting 125°C (±5°C) fixed
Rated Voltage 250V AC
Current Capacity 10A (resistive load)
Contact Type SPDT (Snap Action)
Operating Temperature Range -30°C to 150°C
Housing Material Thermoplastic (UL94 V-0)
Contact Material Silver Alloy
Insulation Resistance >100MΩ (500V DC)
Electrical Life 10,000 cycles (min)
Certification UL, VDE, CE
question:Why were the labels removed from the received goods?
answer:Labels may be removed to comply with destination country regulations or intellectual property requirements, ensuring legal customs clearance.
question:Why is there a handling fee?
answer:The handling fee covers order processing, customs clearance, documentation, and logistics coordination to ensure smooth delivery.
question:Can I arrange self-pickup via official carriers?
answer:Self-pickup can be arranged upon prior request, but coordination with our team is required to update logistics details.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Why were the labels removed from the received goods?
answer:Labels may be removed to comply with destination country regulations or intellectual property requirements, ensuring legal customs clearance.
question:Why is there a handling fee?
answer:The handling fee covers order processing, customs clearance, documentation, and logistics coordination to ensure smooth delivery.
question:Can I arrange self-pickup via official carriers?
answer:Self-pickup can be arranged upon prior request, but coordination with our team is required to update logistics details.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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