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[China]
Trade Verify
Address: No.1, Yixiang ,Liwu Industrial Park,Liwuyuan Village,Xihu District, Shilong Town,Dongguan 523325,Guangdong ,China
Contact name:James Lai
Dongguan Ampfort Electronics Co., Ltd. |
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Verified Suppliers
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Plastic Housing Normal Open Bimetal Thermostat 5A 250V 50C Thermal
Protector
1. Application scope of the Normal Open Bimetal Thermostat 5A
250V 50C Thermal Protector
BW Series thermal protector has small, nimble, long life and other
characteristics, widely used in a variety of tubular motor,
induction cooker, vacuum cleaners, coils, transformers, electric
heaters, ballast, electric appliances, fluorescent lamp ballasts,
auto motor, IC and general electrical equipment overheating over
current double protection.
2. Product Features of the Normal Open Bimetal Thermostat 5A 250V 50C Thermal Protector
BW series thermal protector is to adopt a certain geometry of
bimetallic strip, without auxiliary mechanism, only by the
bimetallic strip themselves feeling gentle heating current, rapid
changes in the state of the bimetallic element, direct drive
contact automatic cutting and processing circuit, overheat and
overload protection
3. Product dimension of the Normal Open Bimetal Thermostat 5A 250V 50C Thermal Protector
Plastic shell: 3.5mm×7.0mm×15.0mm
Metal shell : 3.8mm×7.4mm×20.0mm
4. Material list of the Normal Open Bimetal Thermostat 5A 250V 50C Thermal Protector
| Code | Name | Material | Code | Name | Material |
| A | Plastic case | PBT | G | Base | Cu H62 |
| B | Shrapnel | Bronze | H | Static contact | AgNi10/Cu |
| C | Bimetal | BR-1 | I | Insulator | PBT-VG30 |
| D | Action contact | AgNi10/Cu | K | Immersion Tin | Environmental tin |
| E | Sealants | Epoxy resin | |||
| F | Cable | 22#-70mm |
5.Operating temperature of the Normal Open Bimetal Thermostat 5A 250V 50C Thermal Protector
Operating temperature(OFF): 50±5C
Reset Temperature(ON): 30±8C
ON——OFF Error : more than 8C
Temperature characteristics (regular) table(See table below):
| Part number | Operating temperature (C) | Reset Temperature(C) | Part number | Operating temperature (C) | Reset Temperature (C) |
| BW-DCP-50C | 50±5 | 30±8 | BW-DCP-105C | 105±5 | 70±15 |
| BW-DCP-55C | 55±5 | 35±10 | BW-DCP-110C | 110±5 | 75±15 |
| BW-DCP-60C | 60±5 | 40±10 | BW-DCP-115C | 115±5 | 75±15 |
| BW-DCP-65C | 65±5 | 45±10 | BW-DCP-120C | 120±5 | 80±15 |
| BW-DCP-70C | 70±5 | 45±15 | BW-DCP-125C | 125±5 | 85±15 |
| BW-DCP-75C | 75±5 | 50±15 | BW-DCP-130C | 130±5 | 90±15 |
| BW-DCP-80C | 80±5 | 55±15 | BW-DCP-135C | 135±5 | 95±15 |
| BW-DCP-85C | 85±5 | 55±15 | BW-DCP-140C | 140±5 | 100±15 |
| BW-DCP-90C | 90±5 | 60±15 | BW-DCP-145C | 145±5 | 105±15 |
| BW-DCP-95C | 95±5 | 65±15 | BW-DCP-150C | 150±5 | 110±15 |
| BW-DCP-100C | 100±5 | 65±15 | Customized available | ||
5.1 Contact Resistance
Contactor in the closed state, thermal protector the contact
resistance between the two touch points should be not greater than
50 m Ω.
5.2 Insulation Resistance
Insulation resistance should be more than 100 m Ω .
5.3 Electric Strength
For thermal protector applied between the following parts of the
basic frequency is 50 hz sine wave test voltage (RMS), lasted 1 s
shall be no flashover or breakdown phenomenon
In the condition of thermal breaking contact, between the lead
wire: 500V
In contact normally closed conditions, between lead and shell
surface of the insulating layer: 1500V
5.4 Moisture-proof
Place it in the ambient temperature is 25 C, relative humidity is
95% for 10 hours later, meet requirements 6.4 and 6.5, and no
abnormal change in appearance structure.
5.5 Heat Cycling
Place at 20 C and + 90 C temperature every 2 hours , cycle over 10
times, comply with requirement 6.4, 6.5, and no abnormal change in
appearance structure.
5.6 Heat Resistance
Placed 10 hours later in 140 C temperature, meet requirements 6.4
and 6.5, no abnormal change in structure and appearance.
5.7 Cold endurance
Placed in - 20 C temperature for over 10 hours, satisfies
requirement 6.4 and 6.5, no abnormal change in structure and
appearance.
Action the change in temperature is less than 5 C
5.8 Repeated opening and closing the durability
In room temperature, connected to AC 50HZ&220V&power factor
COS∮ = 0.7 under the condition of rated load test after 2000 times,
rated operating temperature should be within + / - 5 C of initial
value, and contact no welding, after 8000 times thermal protector
should still can continue to work.
5.9 Viratility
Vibration frequency 50HZ,amplitude 0.35 mm,last 90S of fixed
frequency test,test after the rated breaking temperature shall
satisfy the requirements of 6.2.
5.10 Drop impact resistance
Any coagulation from 1200 mm height fell to the ground after 3
times, its appearance structure without changes.
Operating temperature is within 5C
