Self-Hold thermal switch 7AM Series for Temperature Protection
Self-hold 7AM.pdf
Product Description
The Self-Hold 7AM Series Bimetal thermal switch combines the
protection of a Klixon 7AM with a self-holding feature. Designed to
prevent overheating in motors, the Self-Hold 7AM series offers the
best attributes of one shot protectors and auto resetprotectors in
a single package. The Self-Hold 7AM, once activated in a fault condition, maintains
its open state until power is removed. No reset button here-simply removepower and the device will cool
and reset.This inherent design feature adds an extra levelof
security over automatic reset devices of any type. It is the
reliable, cost effective solu-tion for numerous applications. Each
7AM temperature rating has a bimetal disc specifically manufactured
for that rating. Each device is then calibrated and checked for
opening temperature. This results in optimum snap–acting open and
reset characteristics necessary to achieve consistent performance
over the required cycle
life.
Maximum Contact Ratings
16 VDC at 20 amps
120 VAC at 22 amps
277 VAC at 8 amps
600 VAC at 4 amps
Maximum Ambient Temperature
Continuous: open-temperature +10°C
Overshoot: 5 minutes at 200°C
Features of Self-Hold Bimetal thermal switch 7AM Series for Temperature
Protection
Recognized component in ULproduct category XCSZ2
Overheating protection for motors
Tested to UL standard 2111
18 day locked rotor test limited short circuit test
10 cycle locked rotor and 50cycle endurance test
0°C ambient test· Miniature size.
Reliable temperature performance over the life of the device.
Both current and temperature sensitive for maximum design
flexibility.
Short lead time.
Customized leads.
ROHS compliant.
The Self-Hold 7AM is a Thermal Protector/PTC Heater combination.
The PTC Heater is electrically located across the contacts of the
protector.
When the protector contacts are open, the heater is in series with
the load.The heater then maintains the temperature sensitive
bimetal of the protector in an open state.To reset the Self-Hold
7AM, power must be removed for sufficient time to allow the
Self-Hold 7AM to cool to below the protector's reset point.
Temperature Ratings Table
Open Temperature: 65°C to 175°C in increments of 5°C(Temperature
Tolerance: ±5°C)
7AM 020 A5 /7AM 020 65℃ ±5℃
7AM 021 A5 /7AM 021 70℃ ±5℃
7AM 022 A5 /7AM 022 75℃ ±5℃
7AM 023 A5 /7AM 023 80℃ ±5℃
7AM 024 A5 /7AM 024 85℃ ±5℃
7AM 025 A5 /7AM 025 90℃ ±5℃
7AM 026 A5 /7AM 026 95℃ ±5℃
7AM 027 A5 /7AM 027 100℃ ±5℃
7AM 028 A5 /7AM 028 105℃ ±5℃
7AM 029 A5 /7AM 029 110℃ ±5℃
7AM 030 A5 /7AM 030 115℃ ±5℃
7AM 031 A5 /7AM 031 120℃ ±5℃
7AM 032 A5 /7AM 032 125℃ ±5℃
7AM 033 A5 /7AM 033 130℃ ±5℃
7AM 034 A5 /7AM 034 135℃ ±5℃
7AM 035 A5 /7AM 035 140℃ ±5℃
7AM 036 A5 /7AM 036 145℃ ±5℃
7AM 037 A5 /7AM 037 150℃ ±5℃
7AM 038 A5 /7AM 038 155℃ ±5℃
7AM 039 A5 /7AM 039 160℃ ±5℃
7AM 040 A5 /7AM 040 165℃ ±5℃
7AM 336 A5 /7AM 336 170℃ ±5℃
7AM 316 A5 /7AM 316 175℃ ±5℃
Self-Hold (with PTC heater) Bimetal thermal switch 7AM Series for
Temperature Protection
Standard Package
100pcs per bag, 20000pcs per carton
Shipping Term:
EXW, DDU, DDP
Shipping Methods:
Express, By Air, By Sea
Test Equipment
Q: Are you trading company or manufacturer ?
A: We are a fuse product factory.
Q: How long is your delivery time?
A: Generally it is 3 days if the goods are in stock, 5-10 days if
the goods not in stock, according to the quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay
the cost of freight.
Q: What is your terms of payment ?
A: 100% in advance, T/T.
Self-Hold Bimetal thermal switch 7AM Series for Temperature
Protection
Key Words:
Self-Hold 7AM thermal switch
bimetal switch with PTC heater
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thermal cut out switch
resettable thermal cutoff switch
thermal shut off switch
temperature cutout switch
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temperature cutoff switch
thermal protector switch
insulating sleeves
bimetal switch
gasket material
thermal overload protection
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