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46
DiSC THERMOSTATS
Snap Action Disc Thermostats
Common RatingsOperating Specifications
STANCOR
PART Operating Range1
Sec. NUMBER °F °C Function2 Differential3
A STO-60 55 to 65 13 to 18 Opens 20°F 12°C
STO-85 80 to 90 27 to 32 Opens 15°F 8°C
STC-100 93 to 107 34 to 42 Closes 30°F 17°C
STO-110 105 to 115 41 to 46 Opens 30°F 17°C
B STO-120 115 to 125 46 to 52 Opens 30°F 17°C
STC-120 113 to 127 45 to 53 Closes 30°F 17°C
STO-140 135 to 145 57 to 63 Opens 30°F 17°C
STC-140 133 to 147 56 to 64 Closes 30°F 17°C
C STO-150 145 to 155 63 to 68 Opens 30°F 17°C
STO-160 155 to 165 68 to 74 Opens 30°F 17°C
STO-170 165 to 175 74 to 79 Opens 30°F 17°C
STC-170 162 to 178 72 to 81 Closes 30°F 17°C
STO-175 170 to 180 77 to 82 Opens 15°F 8°C
D STO-180 175 to 185 79 to 85 Opens 30°F 17°C
STC-180 172 to 188 78 to 87 Closes 30°F 17°C
STO-190 185 to 195 85 to 91 Opens 30°F 17°C
STO-210 204 to 216 96 to 102 Opens 30°F 17°C
STO-220 214 to 226 101 to 108 Opens 30°F 17°C
E STC-225 217 to 232 103 to 111 Closes 30°F 17°C
STO-230 224 to 236 107 to 113 Opens 30°F 17°C
STC-240 229 to 251 109 to 122 Closes 100°F 56°C
STO-250 244 to 256 118 to 124 Opens 30°F 17°C
STO-325 315 to 335 157 to 169 Opens 50°F 28°C
–– Automatic Reset
1 - Operating Range: Range of temperature at which
disc thermostat performs switching function.
2 - Function:
• Opens - Normally closed circuit - opens within
specified temperature range.
• Closes - Normally open circuit - closes within
specified temperature range.
3 - Differential: Temperature drop below operating range
minimum necessary for disc to reset.
✳ Agency Certification Note: UL Recognized (File E19279 and MH-5304)
CSA Certified (File LR19988)
VDE Licensed
DIMENSIONS
INCHES
Case Weight Agency✳
Load 120 VAC 240 VAC L W H (oz.) Certif.
Resistive 15 Amps 10 Amps 1.23 1.32 0.37 0.2 UL
Inductive 3.0 FLA - 12.0 LRA 1.5 FLA - 6.0 LRA CSA
Pilot Duty 125 VA 125 VA VDE
.145 ±.004 dIA.
2 Holes
1/4
"
quIck
connect termInAls
.290 ±.020
1.320 ±.020
.938
±.010
.370
±.020
.690
±.020
.020
ref.
1.230
±.020
STO-160