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Bimetallic Strip Thermal Overload Protector Switch For Electric Heater

Categories	KSD Thermal Switch
Voltage & Current:	250V 16A
Contact type:	normally closed or normally open
Switch type:	auto reset or manual reset
temperature range:	0-250℃
Place of Origin:	China
Brand Name:	HENGHAO
Certification:	UL,CQC,VDE,ROHS
Model Number:	BW9700
MOQ:	1000PCS
Price:	0.19 / pieces
Packaging Details:	1000pcs per carton
Delivery Time:	7 days
Payment Terms:	TT, CASH.LC.WEST UNION
Supply Ability:	100000000pcs per month
Life Cycle:	100000 cycles

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Dongguan Heng Hao Electric Co., Ltd

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Product Details
Company Profile

Bimetallic Strip Thermal Overload Protector Switch For Electric Heater

BW thermal protectors for electric heater

Principle and Structure

BW series thermal protector product image

BW series thermal protector uses a specific geometry of bimetallic strip that, without auxiliary mechanisms, directly senses mild heating current. The bimetallic element rapidly changes state to automatically drive contact cutting and process circuit functions, providing both overheating and overload protection.

Applications

Widely applied in electric motors and electrical equipment including: electric blankets, hot walls, washer motors, soybean milk machine motors, fan motors, air conditioner motors, fractional motors, DC motors, AC brushless motors, water pumps, transformers, rectifiers, lighting systems, rechargeable batteries, and electric heating appliances.

Specifications

Contact type: Normally closed and Normally open
Electrical rating: 10A/AC120V; 8A/AC250V; 10A/AC250V; 16A/AC250V
Circuit resistance: ≤50mΩ (Initial value)
Insulation resistance: ≥100mΩ
Action temperature range: 40~150℃
Case: Metal case and plastic case
Life: ≥10,000 cycles

Dimensions

Model	L(mm)	W(mm)	H(mm)	Electrical Rating	Lead Wire (mm)
BW metal	20	7.5	3.8	5A/250V; 10A/250V	AWG#22, AWG#18 high temperature silicone wire L1=L2=70mm, or according to customer requirements
BW metal	20	8.0	4.1	16A/250V	AWG#22, AWG#18 high temperature silicone wire L1=L2=70mm, or according to customer requirements
BW plastic	20	8.0	4.0	5A/250V; 10A/250V	AWG#22, AWG#18 high temperature silicone wire L1=L2=70mm, or according to customer requirements

Temperature Specifications

Code	Open Temp.	Reset Temp.	Code	Open Temp.	Reset Temp.
40	40℃±5℃	≥30℃	100	100℃±5℃	70±10℃
45	45℃±5℃	≥30℃	105	105℃±5℃	70±12℃
50	50℃±5℃	≥30℃	110	110℃±5℃	75±12℃
55	55℃±5℃	≥30℃	115	115℃±5℃	80±12℃
60	60℃±5℃	40±10℃	120	120℃±5℃	85±12℃
65	65℃±5℃	45±10℃	125	125℃±5℃	90±12℃
70	70℃±5℃	50±10℃	130	130℃±5℃	95±12℃
75	75℃±5℃	55±10℃	135	135℃±5℃	100±12℃
80	80℃±5℃	60±10℃	140	140℃±5℃	105±12℃
85	85℃±5℃	65±10℃	145	145℃±5℃	110±12℃
90	90℃±5℃	70±10℃	150	150℃±5℃	115±12℃
95	95℃±5℃	75±10℃

Competitive Advantages

Small size and easy installation
Quick bimetallic strip, fast reaction
Life cycle exceeds 10,000 cycles
Prevention against vacuum impregnation process leaks
Replacement for SENSATA 17AM 7AM, SEKI ST-22, etc.

Technical Drawings

BW series thermal protector technical drawing 1

BW series thermal protector technical drawing 2

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Bimetallic Strip Thermal Overload Protector Switch For Electric Heater

Bimetallic Strip Thermal Overload Protector Switch For Electric Heater

Bimetallic Strip Thermal Overload Protector Switch For Electric Heater

motor thermal protection switch

thermal protection switch

Bimetallic Strip Thermal Overload Protector Switch For Electric Heater