BY10 Surge Arrestor

About the BY10 Surge Arrestor

The BY10 Surge Arrestor is part of the ELEHPD Surge Arrester range. BY10-65/4 BY10-40/4 Type Destination Purpose And Scope 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 Surge Arrester

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

BY10-65/4 BY10-40/4
Type Destination

Purpose And Scope

BY10 type Surge Protective Device (SPD) is suitable for AC 50/60 Hz,380V and the following electric power systems,such asTT、IT、TN-S、TN-C、TN-C-S.It protects the electric network shocked by the thunder or over voltage .
Working condition

       Height: not more than 2000m
       Operating temperature : normal -5~+40℃，
       Enlarge  range：-40~+80℃
       Relative humidity：on condition that room temperature 30%~90%
       Installed at no notability shocked and virated place
       Don't be contained in  explosion medium,the medium such as air and dust (including conduction dust )   shouldn't come to the degree that can corrode metal or damage insulation

Specification
BY10 series surge protective device

NO.	Type	Pole	Uc(V)	In(kA)	Imax(kA)	Up(V)	Application
1	BY10-40/1-75	1	75	10	40	≤350	≤AC110V ,Single phase DC ystem
2	BY10-40/4-150	1	150	15	40	≤550
3	BY10-40/1-275	1	275	20	40	≤1000	TN-C、IT、TN-S , single phase system
4	BY10-40/1-320	1	320	15	40	≤1250
5	BY10-40/1-440	1	440	15	40	≤1750	TT system single phase
6	BY10-40/1-600	1	600	15	40	≤2500	AC380V
7	BY10-40/2-75	2	75	10	40	≤350	≤AC110V,single phase and DC system
8	BY10-40/2-150	2	150	15	40	≤550
9	BY10-40/2-275	2	275	20	40	≤1000	TN-C、IT、TN-S single phase system
10	BY10-40/2-320	2	320	15	40	≤1250
11	BY10-40/2-440	2	440	15	40	≤1750	TT
12	BY10-40/2Q-320	3	320	15	40	≤1250	TN-C、IT、TN-S
13	BY10-40/3N-320	3	320	15	40	≤1250	“3+1”compose type SPD or four poles ,3 phase AC system
14	BY10-40/4-275	4	275	20	40	≤1000	TN-C、TN-S-C、TN-S
15	BY10-40/4-320	4	320	15	40	≤1250
16	BY10-40/4-440	4	440	15	40	≤1750	TT

Remark:The item can be enclosed remote conntector ( the end of model with X)

Invalidtion and break away device

Model of the SPD equipped with invalidation and break away device. The device can break away from electric net and send out signal when protector is overheat or fault. The screen of protector appears green when working normal ,otherwise appears red.

Remote communication connector

SPD can be made with remote communication connector.The remote communication connector will close and send fault information when one or more modules are invalid .

Technical parameter

        Maximum continuous operating voltage :   Uc    75    150    275    320    385    440    660V~
         Test grade :                Ⅱ
         Voltage protect level:   Up＜ 350   550    1000    1250    1500    1750    2500V
         Maximum discharge current :(8/20μS)    Imax     40kA
         Nominal discharge currrent: (8/20μS)    In 10    15      20kA
Remote communication terminal parameter

Type of remote communication terminal		Active
Terminal normal power	UN/IN	AC：250V/0.5A DC：250V/0.1A、125V/0.2A、75V/0.5A
Conductor section	BY10-40/4-150	Maximum single line: 1.5mm2

Frequently asked questions about the BY10 Surge Arrestor

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.