OA-50 SELCO, OA-50 Datasheet - Page 28

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OA-50

Manufacturer Part Number
OA-50
Description
Disc Thermostat; 1/2 in; opens 50 degF; auto reset 32 degF; surface mt, sol tabs
Manufacturer
SELCO
Datasheet

Specifications of OA-50

Body Style
Disc
Brand/series
OA
Current Rating
15⁄10 A
Dielectric Rating
1500 VAC per 1 Minute
Dimensions
1.18 in. L × 0.570 in. W × 0.395 in. H
Function
Thermostat
Mounting Style
Surface Mount
Output
NC
Primary Type
Thermostat
Resistance, Insulation
100 Megohms
Standards
UL & cUL Listed, CSA Certified, VDE Approved
Technology
Thermal Conductive
Termination
Solder
Thermostat Type
Disc
Voltage, Supply
250 VAC
T F - Functioning Temperature: Temperature at which the thermal cutoff will open
T H - Hold Temperature: The maximum continuous exposure temperature
T M - Maximum Temperature: The maximum temperature the thermal cutoff can
Models available from stock - subject to availability
STC-170-LL
Number
STC-162
STC-183
STC-196
STC-208
STC-219
STC-230
STC-250
STC-262
STC-286
STC-291
STC-306
STC-333
STC-338
STC-363
STC-378
STC-421
STC-464
Model
+0ºF, -9ºF (+0ºC, -5ºC)
withstand without changing state
(714) 917-1333
*
** Special lead lengths are available
I t i s t h e c u s t o m e r ’s s o l e r e s p o n s i b i l i t y t o s p e c i f y a n d d e t e r m i n e t h e s u i ta b i l i t y o f a pa r t i c u l a r
Some stock models have an overall length of 3.15”
10
Temperature
Functioning
Temperature/Current Correlation Curve
9
8
7
6
5
4
3
2
1
0
104
110
121
128
141
144
152
167
170
184
192
216
240
ºC
72
77
84
91
98
c o n t r o l o r c o m p o n e n t b a s e d o n t h e i r u n i q u e i n d i v i d u a l a p p l i c a t i o n s a n d r e q u i r e m e n ts
(T F )
2
162
171
183
196
208
219
230
250
262
286
291
306
333
338
363
378
421
464
ºF
4
Temperature
6
106
120
128
142
146
160
162
191
200
117
ºC
50
55
60
67
76
80
88
95
O n e S h o t T h e r m a l C u t o f f s
Holding
(800) 257-3526
(T H )
8
122
131
140
153
169
176
190
203
223
243
248
262
288
295
320
324
376
392
ºF
10
www.selcoproducts.com
12
Temperature
120
125
135
140
150
140
170
155
171
250
176
210
300
300
290
241
290
115
Maximum
ºC
14
(T M )
16A
239
248
257
275
284
302
284
338
311
340
482
349
410
572
572
554
466
554
ºF
FAX (714) 917-1355
S T C S e r i e s
cUL
UL/
VDE
FEATURES
Thermal cutoffs are designed to provide upper limit
temperature protection for many electronic products. Under
normal operating temperature, the solid pellet compresses a
spring which holds the star contact against the isolated lead.
When a fault temperature is reached, the pellet melts and
the circuit is opened permanently.
It is important to allow sufficient time to determine the
proper and best location for a thermal cutoff. The location
will affect the cutoff’s ability to protect your product. Placing
in the highest temperature area is usually best.
Electrical ratings
Temperature tolerance
Approvals
The performance of the thermal cutoff requires proper handling during
installation for it to operate in its intended manner. These instructions are
intended to be used to reduce the risk of malfunction of the thermal cutoff
which may result from improper installation during forming of leads, splicing,
welding and soldering.
1. Bending Leads
Care should be taken when forming the Thermal Cutoff (TCO) leads. The
TCO leads must be supported 1/8” from bend and case; and 1/8” from bend
and epoxy. This will prevent the epoxy seal from cracking which may result
in premature degradation of the pellet. A close visual inspection should be
performed to make sure that the TCO leads have not been cut, nicked, folded
sharply, fractured or burned.
2. Mechanical Forces During Appliance Connection
a.
or pushing on the TCO leads. Care should be taken to avoid cracking or
chipping of the epoxy, which may result from sharp twisting, or bending of the
lead.
b. The TCO body must maintain its cylindrical shape to function properly.
Excessive clamping could cause denting or crushing of the TCO body, which
may lead to failure. X-ray and visual inspection of the TCO will determine if
the fuse body has been damaged.
c. Note that the TCO body is electrically live and must be insulated before
applying a metal clamp over the TCO body.
d. Care should be used when pushing the epoxy end lead to avoid the lead
being forced into the TCO body. This could result in a failure.
T P
TH
T S
T D
+a
Low cost
Excellent contact rating
Quick and easy installation
When installing the TCO, avoid unnecessary bending, twisting, pulling
The highest temperature of the product to which a cutoff is to be
attached
The safe temperature range for use of the cutoff
T F - T H = T S
Where TF = the functioning temperature (24ºC less than or equal
to TS less than or equal to 40ºC)
The heating temperature caused by electrical load
1. Self heating of lead wire
2. Structure of ventilation or air tightness
3. Location of connecting terminal
4. Thickness of insulated covering material
5. Best condition value, electric voltage changes considered
TP + TS + TD + a = Applicable Temperature
E-mail: sales@selcoproducts.com
Determining The Proper Series
Installation Instructions
SPECIFICATIONS
120/250VAC, 10 Amps, Continuous Duty
120/250VAC, 15 Amps, Interrupting Current
+0ºC/-5ºC
UL, CSA, VDE, RoHS Compliant
APPLICATIONS
Appliances
Motors
Personal care

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