Datasheet

Commercial Thermostats
6 www.honeywell.com/sensing
Figure 4. 2450RC/2450RCH/2455RC Series Automatic Reset Thermostat
The 2450RC/2450RCH/2455RC Series is a single pole,
single throw, snap-acting, non-adjustable thermostat which
may be used in applications such as industrial and electrical
equipment. A temperature-sensitive bimetal disc, electrically
and thermally isolated from the switch, is used to actuate
the normally-closed contacts. Contacts open when surface
or ambient temperatures increase to the operating set point
of the calibrated metal disc. The entire switch is enclosed in
a ceramic housing; the bimetal disc is retained by a metal
heat-conducting end cap. Due to the small size of this unit
and the inherently low mass of the bimetal snap-action disc,
response of this thermostat to temperature changes is
extremely rapid, compared to other commercially available
thermostatic devices. For increased sensitivity, an exposed
bimetal disc may be specified. A variety of mounting
brackets and terminals is available.
All versions are UL/CSA and European approved.
Potential applications include high temperature control for:
• Power supplies
• Appliances
• Medical equipment
• Water heaters
• Office automation
• Industrial equipment
• HVAC equipment
Table 5. 2450RC/2450RCH/2455RC Series Standard Temperature Characteristics
Tolerance Operating Temperature Range
Open
°C [°F]
Close
°C [°F]
Standard Mean Differential
°C [°F]
±4 [±7] ±6 [±10] 28 to 34 [50 to 60]
±4 [±6] ±6 [±10] 22 to 27 [40 to 49]
±4 [±6] ±5 [±9] 17 to 22 [30 to 39]
±4 [±6] ±5 [±8] 14 to 16 [25 to 29]
0 °C to 26 °C
[32 °F to 79 °F]
±3 [±5] ±5 [±8] 8 to 14 [15 to 24]
±5 [±9] ±8 [±15] 45 to 56 [81 to 100]
±4 [±7] ±6 [±11] 34 to 45 [61 to 80]
±4 [±6] ±6 [±10] 28 to 34 [50 to 60]
±3 [±5] ±6 [±10] 22 to 27 [40 to 49]
±3 [±5] ±5 [±9] 17 to 22 [30 to 39]
27 °C to 82 °C
[80 °F to 180 °F]
±3 [±5] ±5 [±8] 8 to 16 [15 to 29]
±6 [±10] ±8 [±15] 45 to 56 [81 to 100]
±5 [±8] ±8 [±15] 35 to 45 [61 to 80]
±4 [±7] ±7 [±12] 28 to 34 [50 to 60]
±4 [±6] ±6 [±10] 22 to 27 [40 to 49]
±4 [±6] ±5 [±9] 17 to 22 [30 to 39]
83 °C to 110 °C
[181 °F to 230 °F]
±4 [±6] ±5 [±8] 8 to 16 [15 to 29]