BW-BCM Thermal protector

Power class: 6A

Type series: BW-B

normally closed

resets automatically

with connector cables

transparent PET cap insulation

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BW-BCM Thermal protector

Main parts

1) Shell 2) Iron bracket 3) bimetal disc

4) movable contact 5) Base 6) stationary silver contact

Construction

The movable contact are welded to the bimetal sheet and then welded to the iron bracket. The stationary silver contact and base are molded into a whole, and then the base is riveted with the iron bracket. The current first passes through the movable contact on the bimetal disc from the iron bracket, and then passes through the stationary silver contact to form a loop.

Function

Under normal conditions, the moving contact is in close contact with the stationary silver contact under the pre-pressure of the bimetal disc; When the rated operating temperature is reached, the bimetal disc is deformed by heat and snap rapidly, cut off the circuit. After that, the device begins to cool down. When it reaches the de-fined reset temperature, the bimetal disc and the spring disc snaps back into its start position, the contacts will close again, and the device starts working again.

PRODUCT PARAMETER

Nominal switching temperature (NST) in 5°C

35 °C - 160 °C

Tolerance (standard)

±5K

Reverse switch temperature (RST) tolerance

See datasheet

Thickness

3.6mm

Width

6.8mm

Length

22mm

Resistance to impregnation

suitable

Pressure resistance to the switch housing

150N

Standard connection

0.33 mm² / AWG22

Available approvals

UL/VDE/CQC

Operating voltage range AC/DC

up until 500 V AC / 36 V DC

Rated voltage AC

250 V

Rated current AC cos ϕ = 1.0 /cycles

6A / 6,000

Rated voltage DC

24.0 V

Max. switching current DC /cycles

6 A / 10,000

Insulation voltage

1.5 kV

Total bounce time

< 1 ms

Contact resistance

≤ 50 mΩ

Vibration resistance at 10 ... 60 Hz

100 m/s²

PRODUCT PARAMETER