ALF series Miniature Circuit Breaker(MCB)
ALF are intended for protecting distribution and group systems having different loads: electric appliances, lighting – V characteristic switches; drives with moderate starting currents (compressor, fan group) - C characteristic switches; drives with high starting currents (hoisting mechanisms, pumps) - D characteristic switches; Miniature circuit breaker ALF are recommended for use in electrical distribution panels of residential and public buildings.
5.0
design customization
Please fill out the form below to request a quote or to request more information about us. Please be sure to upload customized requirement documents or pictures, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Please fill out the form below to request a quote or to request more information about us. please be as detailed as possible in your message, and we will get back to you as soon as possible with a response. we're ready to start working on your new project, contact us now to get started.
Product Description
Two types of short circuit protection.
Wide range of operating temperatures from –40 to +50° С.
Updated wider engagement lever with improved contact area.
Notches on terminal clamps provide for lowering thermal losses and boosting the mechanical stability of connection.
Specifications
| MCB ALF | ||||||
| For protection of general power distribution (IEC/EN 60898-1) | ||||||
| Poles | 1P | 2P | 3P | 4P | ||
| Electrical performance | ||||||
| Functions | short circuit protection,overload protection,insolation,control | |||||
| Rated frequency f Hz | 50-60Hz | |||||
| Rated working voltage Ue V AC | 230/400 | 400 | ||||
| Rated current In A | 6,10,16,20,25,32,40,50,63 | |||||
| Rated insulated voltage Ui V | 500 | |||||
| Impulse withstand voltage Uimp kV | 4 | |||||
| Instantaneous tripping type | ALF | B/C/D | ||||
| Rated short circuit Icn(kA) | ALF | 4.5 | ||||
| Release type | Thermal magnetic type | |||||
| Service life(O~C) | Mechanical | Actual value | 20000 | |||
| Standard value | 4000 | |||||
| Electrical | Actual value | 8000 | ||||
| Standard value | 4000 | |||||
| Connection and installation | ||||||
| Protectiom degree | IP20 | |||||
| Wire mm² | 1~35 | |||||
| Working temperature | -5 ～+40℃ | |||||
| Resistance to humidity and heat | Class 2 | |||||
| Altitude above sea | ≤2000 | |||||
| Relative humidity | +20℃ , ≤90% ;+40℃ , ≤50% | |||||
| Pollution degree | 2 | |||||
| Installation environment | Avoid obvious shock and vibration | |||||
| Installation class | Class Ⅱ , Class Ⅲ | |||||
| Mounting | DIN35 rail | |||||
| Combination with accessories | ||||||
| Auxiliary contact | Yes | |||||
| Alarm contact | Yes | |||||
| Shunt release | Yes | |||||
| Undervoltage release | Yes | |||||
| Auxiliary contact+Alarm contact | Yes | |||||
| Dimensions(mm) (WxHxL) | a | 17.5 | 35 | 52.5 | 70 | |
| b | 80.2 | 80.2 | 80.2 | 80.2 | ||
| c | 76.5 | 76.5 | 76.5 | 76.5 | ||
Product Features
Excellent breaking ability
Two types of short circuit protection.
Wide range of operating temperatures from –40 to +50° С.
The four accessories are installed on the left side of DAB7-63 miniature circuit breakers, the DAB7-OF, DAB7-FB, DAB7-QY are fixed with screws, the DAB7-FL is fixed to both sides with tape, and at the same time can be installed with the guide rail.
Updated wider engagement lever with improved contact area.
The mechanical connection between the circuit breaker and DAB7-, DAB7- FB, DAB7- FL, DAB7-QY transmission shaft should be flexible and compatible with the rest of the equipment.
Notches on terminal clamps provide for lowering thermal losses and boosting the mechanical stability of connection.
After DAB7-QY circuit breaker has been installed, it can only be closed when press the test button. And installer should shut off the circuit breaker and release the test button immediately, thus ensure the installation safely and correctly. Besides, the rated voltage should pass through the undervoltage trip at same time.
{{item.score}} Stars
{{item.pre}}%
{{item.nickname ? (item.nickname.slice(0, 2) + '*****') : item.source === 1 ? 'mall buyer' : '--'}}
{{item.comment_time}} Review in the {{item.country}}
{{itemAttr.params_key}}: {{itemAttr.params_value}}
Contact Us
Get in touch with us
Just leave your email or phone number in the contact form so we can send you a free quote for our wide range of designs!
0086 173 1658 0160
yjq@cdada.com
171 Yezhuang road, Fengxian District, Shanghai, China
Shanghai DADA Electric Co., Ltd.
Acknowledged as one of the most respected nationwide manufacturers and exporters of low voltage circuit breakers in China.
Social media
LINKS
PRODUCT
CONTACT US
Contact Person: Joker Yang
Tel: +86 173 1658 0160
Email: yjq@cdada.com
Contact Person: Charlotte Weng
Tel: +86 151 6747 7792
Email: charlotte.weng@cdada.com
Address: 171 Yezhuang Road, Fengxian District, Shanghai, China