The BPS-MSB10 is a general duty AC Surge Protection Device (SPD) for high risk electrical and electronic applications. The BPS-MSB10 provides protection against the direct and indirect effects of lightning and is particularly useful where space is limited.

This device is designed for single and two phase applications up to 480Vac with a surge current handling of 18kA 8/20us. The BPS-MSB10 offers, very low leakage current to ground, produces no follow on current and has a low residual clamp voltage.

The BPS-MSBS10 provides wire connection leads for parallel wiring, mounting flange to facilitate easy surface installation, high quality metal oxide varistors with integral thermal disconnection compliant to UL-60691 and real-time visual fault indication.


Brooks Power System Part Number BPS-MSB10-120 BPS-MSB10-40 BPS-MSB10-480
Ac Network 120 V 240 V, 277 V 347V, 480 V
Connection Mode 1 Phase 1 Phase 1 Phase
UL Max, Operating Voltage
180Vac 305Vac 550Vac
TOV withstand                           (UT) 180Vac 305Vac 550Vac
IEC/UL Nominal Discharge Current    (In)
15 impulse 8/20 μs
Max Discharge Current                (Imax)
1 impulse 8/20 μs
18KA 18KA 18KA
ANSI/IEEE C62.41-2002 20kV 1.2/50μs, 10kA 8/20μs Yes Yes Yes
UL Voltage Protection rating        (VPR) 600 V 1000 V 1800 V
Protection level at in                    (Up) 0.6kV 0.6kV 0.6kV
UL short circuit current rating      (SCCR) 25kAIC 25kAIC 25kAIC
Leakage current at MCOV              (IC) <1mA
Follow Current                              (if) None
AC System Single Phase
Thermal Disconnector UL 60691
Over Current Protection Time Delay – 250A Max
Dimensions 60 x 49 x 32 ( in mm )
Connection by screw terminals, # 4 AWG Max
Remote Signal Indicator 250Vac max, 2A
Mounting Mounting Flange
Operating Temp -50º C to + 85º C
Operating Altitude 13,000 ft ( 4,000 m )
Relative Humidity 5 to 95% non-condensing, up to 100% external
Enclosure Material Thermoplastic UL94 – 5A
Environmental Rating IP66
Weight 2.8 oz
Standards Compliance
IEC 61643 – 1 – INTERNATIONAL Class I and II
EN 61643 – 11 – EUROPE Class I and II
NF EN 61643 – 11 – France Class I and II
UL 1449 3rd Edtion – USA Type 4, Type 2 Location
UL 1449 3rd Edtion – CANADA Type 4, Type 2 Location
CSA C22.2 No. 8 – M1986 Class 9091 32, Class 9091 92
RoHS Directive 2002 / 95 / EC

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