C45N MCB

About the C45N MCB

The C45N MCB is part of the ELEHPD MCB range. C45N series circuit breaker is used in lighting distribution system or motor distribution system for protecting overload and short-circuit in the system. The product is neoteric in structure, light in weight, reliable and excellent in performance. Its frame and parts adopt plastics of high fire-resistant and shockproof. The product, with long life, is mainly used in AC 50Hz/60Hz single-pole 240V or two, three, four-pole 415V circuit for overload and short-circuit protection as well as for unfrequent on-and-off switching electric equipment and lighting circuit in normal case. The products comply with IEC 898 & BS 3871. ELEHPD manufactures and exports low voltage electrical products from Yueqing, Zhejiang, China, supplying distributors, panel builders, M&E contractors and OEM buyers worldwide.

Typical applications

Consumer units and distribution boards in residential buildings
Commercial and retail fit-outs where selective protection is required
Industrial control panels and machine-builder assemblies
Solar PV, EV charger and battery-storage sub-circuits
OEM equipment where a DIN-rail protective device is specified

How to specify the right MCB

Match the rated current to the circuit design current, then check the cable ampacity
Pick the trip curve to the load: B for resistive/lighting, C for general mixed loads, D for motors and transformers
Confirm the breaking capacity meets the prospective short-circuit current at the point of installation
Verify the pole configuration (1P, 1P+N, 2P, 3P, 3P+N, 4P) against the system earthing arrangement

Specifications

C45N series circuit breaker is used in lighting distribution system or motor distribution system for protecting overload and short-circuit in the system. The product is neoteric in structure, light in weight, reliable and excellent in performance. Its frame and parts adopt plastics of high fire-resistant and shockproof. The product, with long life, is mainly used in AC 50Hz/60Hz single-pole 240V or two, three, four-pole 415V circuit for overload and short-circuit protection as well as for unfrequent on-and-off switching electric equipment and lighting circuit in normal case. The products comply with IEC 898 & BS 3871.

Breaking capacity

C45N
Standard	Rated current(A)	Pole	Voltage(V)	Breaking capacity(A)
BS 3871-1 IEC898	1 to 40	1	240	6000
2,3,4	415	6000
50 to 60	1	240	4000
2,3,4	415	4000
BS 3871-1 IEC898	1 to 40	1	240	4000
2,3,4	415	4000
IEC 157-1	1 to 40	1	220/240	6000
2,3,4	220/240	12000
2,3,4	380/415	6000
IEC 157-1	1	1	220/240	10000
2,3,4	220/240	20000
2,3,4	380/415	10000
3	1	220/240	8000
2,3,4	220/240	20000
2,3,4	380/415	8000
10 to 40	1	220/240	7000
2,3,4	220/240	16000
2,3,4	380/410	8000
50	1	220/240	6000
2,3,4	220/240	10000
2,3,4	380/410	6000
60	1	220/240	5000
2,3,4	220/240	10000
2,3,4	380/410	5000

Specifications

Setting temperature of protective characteristics at 400C

Ratecd Voltage:240V/415V

Rated Current:1,3,6,10,16,20,25,32,40,50,63A

Electrical life:no less than 6000 operations

Mechanical life:(O-C)no less than 20000 operations

Frequently asked questions about the C45N MCB

What is the difference between an MCB and an MCCB?

An MCB (miniature circuit breaker) is a DIN-rail device for final circuits, typically rated up to 125 A with a fixed trip curve. An MCCB (moulded case circuit breaker) is a larger device for main and sub-main distribution, usually 16 A to 1600 A, with adjustable thermal and magnetic settings and a higher breaking capacity. Use an MCB for branch circuits and an MCCB where you need adjustability or higher fault ratings.

How do I choose between a Type B, C and D trip curve?

Type B trips between 3 and 5 times rated current and suits resistive loads such as lighting and heaters. Type C trips between 5 and 10 times and is the general-purpose choice for socket circuits and mixed loads. Type D trips between 10 and 20 times and is used for loads with high inrush, such as motors, transformers and large LED drivers.

What does 6 kA breaking capacity mean in practice?

It is the maximum prospective short-circuit current the device can safely interrupt. 6 kA covers most domestic and light commercial installations. Where the transformer is close and the fault level is higher, specify 10 kA devices so the breaker still clears the fault without damage.

Can these devices be supplied with your own brand?

Yes. OEM branding, buyer-specific labels, custom carton print and private-model numbering can be arranged on qualified order volumes.