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What is the Definition of a Miniature Circuit Breaker?
An MCB (miniature circuit breaker) or DC MCB is a switch that closes, carries, and breaks a circuit. It can open the circuit if the circuit current exceeds a certain threshold. You can usually use an isolator with a fuse in place of miniature circuit breakers.
The Functioning Principle of the DC MCB
An MCB is a switch that changes fault current or carries rated current. When the circuit current exceeds a defined amount or limit, these devices can automatically cut the circuit. You can manually switch on or off the MCB like standard switches whenever necessary.
About this item
- Specifications:Rated current: 63A; Rated voltage is 500V; Breaking capacity is 6KA; Number of levels: 2 poles.
- Powerful Protection: Fast trip to ensure reliable operation of the load and prolong the life of dc circuit breakers.
- ARC EXTINGUISHING:DC breaker is more powerful than AC breaker to extinguish arcs. It means that our low-voltage breaker can be used at the same level voltage of DC and AC circuit system
- APPLICATION:Used in DC power system, ship electric power system, solar photovoltaic system, or other DC system.
- INSTALLATION: Screw clamp wires, 35mm DIN rail mount
C type MCB
This type of MCB is designed to trip at 5 to 10 times of rated current. These MCBs are usually used for high inductive loads where switching surges are high such as in fluorescent lighting and small motors. So, they are suitable for industrial and highly inductive commercial installations.
LEEYEE Miniature Circuit Breaker MCB
Warm Tips:
Pay attention to polarity.
Select wire size according to rated current.
Fast closing to ensure load operation and prolong service life.
The shell is made of PBT plastic, the cover is made of transparent PC, the sealing ring is made of silicon rubber, and the guide rail is made of tin plate.
Application: Wide range of use, suitable for installation indoors, widely used in solar panel, PV, RV, homes, workshops, hotels, shopping malls, power stations, etc.
Polarity Marked
This DC circuit breaker has no polarity requirement in use, and the positive and negative poles can be inverted. However, the installation, use, and maintenance of DC circuits are based on polarity requirements. So, in order to provide reliable indication and reference for the distribution, we highly recommend that you connect the wires according to the marked polarity.
Specifications
| Product type | DC Miniature Circuit Breaker |
| Rated Operational Voltage | 500V DC |
| Rated Current [In] | 16 A / 20 A/ 32 A / 40 A / 63 A (optional) |
| Poles | 2 |
| Trip unit Technology | Thermal-magnetic |
| Trip Curve | C |
| Breaking Capacity | 6 kA Ics=Icu |
| Mechanical Durability | 20000 cycles |
| Electrical Durability | 8000 cycles |
| Mounting Support | 35 mm DIN rail |
| Operating Temperature | -13°F(-25ºC) ~ 140°F(60ºC) |
| PackageIincludes | 1 x DC miniature circuit breaker |
Technical Details
| Brand | LEEYEE |
|---|---|
| Current Rating | 16 Amps |
| Voltage | 500 Volts |
| Item Dimensions LxWxH | 1.42 x 2.95 x 3.15 inches |
| Circuit Breaker Type | Standard |
| Mounting Type | DIN Rail Mount |
| Number Of Poles | 2 |
| Manufacturer | LEEYEE |
| Part Number | LYM9 |
| Item Weight | 5.9 ounces |
| Product Dimensions | 1.42 x 2.95 x 3.15 inches |
| Item model number | LYM9-16 |
| Size | 2P-500V |
| Color | 16A |
| Power Source | DC |
| Batteries Included | No |
| Batteries Required | No |
