OA-50 SELCO, OA-50 Datasheet - Page 26

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

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

The S7AM Thermal Protector is a thermally operated snap-
action device which delivers the maximum protection in the
smallest package. The operating principle of the S7AM is
both simple and effective. At the heart of the protector is a
bimetal snap-action disc. When the temperature of this disc
reaches its calibrated temperature it snaps open, resulting
in an open circuit.
an increase in ambient temperature, an increase in current
flowing through the disc, or a combination of both. After the
S7AM breaks the circuit, the system cools and the S7AM
automatically resets allowing power to be restored to the
circuit.
Each S7AM rating has a bimetal disc designed and manufactured
for that specific temperature rating. Each individual device is
then calibrated and checked for opening temperature. This
results in precise operating characteristics necessary to
achieve consistent, reliable performance over the required life
cycle.
Approximation, to be used only for selecting
samples for verification tests.
Note: Delta T is the difference between the
zero current calibrated opening temperature
(T cal ) and ambient temperature (T ambient )
at the protector location.
Ultimate Trip Current vs.
[phone]
Delta Temperature
Type A (radial)
Type B (axial)
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
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
This temperature is reached by either
[phone]
Average First Cycle Tripping Time
vs. Current (25ºC Ambient)
S 7 A M S e r i e s ( O p e n O n - R i s e )
T h e r m a l P r o t e c t o r s
Type A (side view)
Type A (end view)
www.selcoproducts.com
FAX [phone]
FEATURES
Electrical ratings
Dielectric strength
Approvals
UL2111
UL873
CSA
KEMA (ENEC) EN60730-2-2
KEMA (ENEC) EN60730-2-3
KEMA (ENEC) EN60730-2-9
Standard Opening Temperature
S7AM
Opening
Temp
Miniature size
Gasket steel case
Individually temperature
tested and calibrated
Wide selection of leads
and insulating sleeves
Positive make and break
with snap-action disc
Repeatable temperature
performance over life
100
105
110
115
120
125
130
135
140
145
150
155
160
165
170
175
ºC
65
70
75
80
85
90
95
Resistance
Bimetal
XXX
* Low
Disc
020
021
022
023
024
025
026
027
028
029
030
031
032
033
034
035
036
037
038
039
040
336
316
E-mail: [e-mail]
PART NUMBER SYSTEM
Code
Resistance
SPECIFICATIONS
Bimetal
** High
Disc
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
16VDC, 20 Amps, 10,000 Cycles
120VAC, 22 Amps, 10,000 Cycles
277VAC, 8 Amps, 10,000 Cycles
600VAC, 4 Amps, 10,000 Cycles
900 Volts
UL File Numbers found under Texas Instr. 7AM
Motor Protection - File E15962
Limit and Regulating Controls - File E34618
Std. C22.2, No. 77 - Motor Protection
File No. 11372
Std. C22.2, No. 74
Limit and Regulating Controls - File No. 24458
Motor Protection - File No. 2014531.03
Ballast Protection - File No. 2014531.03
Thermal Cut-Out - File No. 2014531.03
X
* Low Resistance - In applications where
** High Resistance - In applications where
Code Terminals
Code Tolerance
Code
Non-Standard Gasket
Characteristics
temperature rise is less than 2ºC per second
insulating sleeves
Configuration
temperature rise is 2ºC - 5ºC per second
APPLICATIONS
A
B
Temperature
i.e. Wire leads,
5
5
Material (Option)
Tolerance
X
Terminal
Automotive accessory,
other applications
Physical
HID ballasts
Transformers
Battery packs
Lighting ballasts
Vacuum cleaners
Split capacitor motors
solenoids, PC boards and
High Seal / White
Same end
Opposite
Type/Color
±5ºC
end
-
Gasket
XXX
-
X