TK24 or TK24HT
TK24 is a versatile ½-inch thermostat that handles higher currents (16 A/10 A) up to 200 °C, with contacts configurable to open or close on temperature rise and IP64 sealing when required. TK24HT trades current capacity for extreme-temperature endurance, surviving to 425 °C with a fixed “opens-on-heat” contact scheme, ±6 °C tolerance and IP4X protection. In short: choose TK24 for mainstream 200 °C duty with better sealing, and TK24HT for high-heat safety cut-outs where lower current is acceptable.
Read moreParameters overview
This reference piece walks through 14 critical parameters—rated voltage/current, temperature range and hysteresis, cycle life, insulation strength, IP rating, power factor, and reset style—that govern a bimetal thermostat’s safety, accuracy, and longevity. Each parameter is defined, its design impact explained, and typical values given (e.g., ≤250 V, 100 000 cycles, ±3 °C tolerance). Taken together, the list serves as a designer’s checklist for matching a thermostat to demanding consumer or industrial applications.
Read moreTK32 or TK32OS
Both TK32 limiters break the circuit between 30 °C and 250 °C, but TK32 resets manually after cooling while TK32OS is a one-shot device that stays open permanently. TK32 therefore suits equipment that a technician can inspect and re-activate, whereas TK32OS guarantees a non-restartable shutdown in fire-safety, medical, or chemical systems. Accuracy is similar (±3 °C/±6 °C), so the decisive factor is whether the application must allow or forbid reset.
Read moreVariants of TK34
The TK34 family shares a bimetal disc core and full customisation, yet differs in reset mode and current rating: TK34A is automatic-reset and carries up to 45 A; TK34R adds an internal heater for faster, targeted switching up to 25 A; TK34M requires a manual reset and handles 40 A for safety-critical scenarios. All models cover roughly –25 °C…120 °C and exceed 100 000 cycles at moderate loads, making them drop-in solutions from consumer heaters to industrial motors. Selecting the variant is essentially a trade-off between hands-off convenience, response speed, and the need for operator inspection.
Read moreTKP or TKPCS
TKP and TKPCS are shaft-adjustable, automatically reset thermostats rated up to 16 A and 250 VAC, but TKP offers finer tolerances (±3 °C…±10 °C), reset offsets from 5 °C to 15 °C, and operation down to –45 °C. TKPCS adds current sensitivity, uses dual “Low/High” tolerance bands (±20 °C/±10 °C) with a fixed 15 °C reset, and has higher contact resistance (0.15 Ω) that is acceptable in power-regulation roles. Engineers pick TKP when tight thermal control or sub-zero service is paramount, and TKPCS when load-dependent trip behaviour and simpler calibration are more valuable.
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