Product Search

    SEARCH NOW FOR ALL YOUR RADWELL SOLUTIONS

    Radwell is here to supply you with all your plant floor needs.

    Controls & Indicators / Power Converter

    Radwell is not an authorized distributor, reseller or representative of the products featured on this website. All product names, trademarks, brands and logos used on this site are the property of their respective owners. The depiction, description or sale of products featuring these names, trademarks, brands and logos is for identification purposes only and is not intended to indicate any affiliation with or authorization by any rights holder.

    Filter Results
    Results 1-50 of 974.
    SIEMENS 6SL3210-1SE12-2UA0

    SIEMENS

    6SL3210-1SE12-2UA0

    DISCONTINUED BY MANUFACTURER, CONVERTER POWER MODULE, SINAMICS S120, PM340, 2.2 AMP, 0.75 KW, 380-480V , 50/60 HZ, BLOCK FRAME, INTERNAL AIR COOLING
    ✓ IN STOCK!
    Buy Surplus As Low As $1,230.85
    $1,230.85
    SIEMENS 6SL3210-1SE11-3UA0

    SIEMENS

    6SL3210-1SE11-3UA0

    DISCONTINUED BY MANUFACTURER 10/01/2019, CONVERTER POWER MODULE, SINAMICS S120 CONVERTER, INPUT: 3 PHASE / 380-480 VAC / 50/60 HZ, OUTPUT: 3 PHASE / 1.3 AMP / 0.37 KW
    ✓ IN STOCK!
    Buy Surplus As Low As $999.10
    $999.10
    SIEMENS 6SL3210-1SE21-0AA0

    SIEMENS

    6SL3210-1SE21-0AA0

    DISCONTINUED BY MANUFACTURER 10/01/2019, CONVERTER POWER MODULE / PM340, SINAMICS S120, FSB FRAME SIZE, 3 PHASE, 20.4 AMP PEAK OUT, 10.2 AMP RATED OUT, 4 KW POWER OUT, 380-480 VAC INPUT, 50/ ...
    ✓ IN STOCK!
    $5,433.00 Buy Surplus As Low As $2,692.64
    $2,692.64
    SIEMENS 6SL3131-7TE31-2AA3

    SIEMENS

    6SL3131-7TE31-2AA3

    SINAMICS S120 ACTIVE LINE MODULE INPUT: 380-480 V 3 AC, 50/60 HZ OUTPUT: 600 V DC, 200 A, 120 KW TYPE OF CONSTRUCTION , 6SL31317TE312AA3 , 6SL3131-7TE31-2AA3
    ✓ IN STOCK!
    $36,852.00 Buy Surplus As Low As $22,112.00
    $22,112.00
    SIEMENS 6SL3210-1SE21-0UA0

    SIEMENS

    6SL3210-1SE21-0UA0

    POWER MODULE, 380-480VAC INPUT, 10AMP, BLOCKSIZE FRAME SIZE FSB, INTERNAL AIR COOLING, 4.0 KW OUTPUT , 6SL32101SE210UA0 , 6SL3210-1SE21-0UA0
    ✓ IN STOCK!
    $4,628.00 Buy Surplus As Low As $2,777.00
    $2,777.00
    SIEMENS 6SL3210-1SE11-7UA0

    SIEMENS

    6SL3210-1SE11-7UA0

    DISCONTINUED BY MANUFACTURER 10/01/2019, CONVERTER POWER MODULE, PM340, SINAMICS S120, 1.7 AMP, 0.55 KW, 380-480 VAC, 50/6 HZ, INTERNAL COOLING
    ✓ IN STOCK!
    Buy Surplus As Low As $1,206.95
    $1,206.95
    PULS CD5.241-S1

    PULS

    CD5.241-S1

    DC/DC CONVERTER, 24 VDC INPUT VOLTAGE, 120 W OUTPUT POWER, 23-2 8 VDC OUT ADJUSTMENT RANGE, 5-4.3 A OUTPUT RANGE, WITH SIGNAL CONTACTS, 20% POWER BOOST, 50 MVPP RIPPLE & NOISE VOLTAGE MAX
    ✓ IN STOCK!
    $791.38 Buy Surplus As Low As $601.45
    $601.45
    SIEMENS 6SL3210-1SE23-8AA0

    SIEMENS

    6SL3210-1SE23-8AA0

    SINAMICS S120,PM340_FSD_480V_FLT,18.5KW, DI CS MC GMC MICRO/SINAMICS G SPARE, INDUSTRY SERVICES MC , 6SL3210-1SE23-8AA0
    ✓ IN STOCK!
    $14,750.00 Buy Surplus As Low As $8,850.00
    $8,850.00
    SIEMENS 6SL3203-0BE32-5AA0

    SIEMENS

    6SL3203-0BE32-5AA0

    ADDITIONAL LINE FILTER, FOR POWER MODULE PM 240 FSF, FROM 110 KW, LO 380-480V, 3 PHASE, 250 AMP, CLASS A , 6SL3203-0BE32-5AA0
    ✓ IN STOCK!
    $3,000.00 Buy Surplus As Low As $1,321.00
    $1,321.00
    SIEMENS 6SL3-310-1GE33-1AA0

    SIEMENS

    6SL3-310-1GE33-1AA0

    DISCONTINUED BY MANUFACTURER, G130 POWER MOD, IP20, 380-480VAC, 310A, 250HP
    ✓ IN STOCK!
    $18,000.00 Buy Surplus As Low As $4,976.99
    $4,976.99
    Repair Yours Contact Us
    CARLO GAVAZZI CPTDINAV53LA3AX

    CARLO GAVAZZI

    CPTDINAV53LA3AX

    COMPACT POWER TRANSDUCER, CPT-DIN ADVNCD, 3-PH, 400/690VLL, 18-60VAC/DC, 3X0-20MA OUTS
    ✓ IN STOCK!
    $1,197.38 Buy New $1,197.38
    $910.01
    CARLO GAVAZZI CPTDINAV53HR2AX

    CARLO GAVAZZI

    CPTDINAV53HR2AX

    COMPACT POWER TRANSDUCER, CPT-DIN ADVNCD, 3-PH, 400/690VLL, 90-260VAC/DC, 2 RELAY OUTS
    ✓ IN STOCK!
    $1,540.20 Buy New $1,540.20
    $924.12
    TAMURA OVS-24G-UC

    TAMURA

    OVS-24G-UC

    AC/DC CONVERTER, ENCLOSED, 96W, 24 VDC OUTPUT, 8 AMP, 90-264 VAC INPUT, 50/60 HZ
    ✓ IN STOCK!
    $2,013.00 Buy Surplus As Low As $1,177.24
    $1,177.24
    Repair Yours Contact Us
    TAMURA OVS-24F

    TAMURA

    OVS-24F

    AC/DC CONVERTER, OVS SERIES, ENCLOSED, 1 OUTPUT, 24 VDC, 5 AMPS, 90-264 VAC INPUT
    ✓ IN STOCK!
    $2,013.00 Buy Surplus As Low As $1,329.00
    $1,329.00
    SIEMENS 6SL3131-7TE21-6AA3

    SIEMENS

    6SL3131-7TE21-6AA3

    SINAMICS, S120, ACTIVE LINE MODULE, INPUT: 3PHASE, 380-480VAC, 50/60HZ, OUTPUT: 600VDC, 27A, 16KW, FRAME SIZE: BOOKSIZE EXTERNAL AIR COOLING , 6SL31317TE216AA3 , 6SL3131-7TE21-6AA3
    ✓ IN STOCK!
    $9,540.00 Buy Surplus As Low As $2,058.00
    $2,058.00
    SIEMENS 6SL3210-1SE17-7UA0

    SIEMENS

    6SL3210-1SE17-7UA0

    DISCONTINUED BY MANUFACTURER 10/01/2019, POWER MODULE, SINAMICS S120 SERIES, CONVERTER, 7 AMP, 380-480 VAC, 50/60 HZ, 3 KW, PANEL MOUNT
    ✓ IN STOCK!
    Buy Surplus As Low As $1,016.15
    $1,016.15
    SIEMENS 6SL3210-1SE17-7AA0

    SIEMENS

    6SL3210-1SE17-7AA0

    DISCONTINUED BY MANUFACTURER, CONVERTER POWER MODULE, SINAMICS S120, 380-480 V, 3AC INPUT, 50/60 HZ OUTPUT, 3AC 7.7 AMP (3.0 KW) , 6SL3210-1SE17-7AA0
    ✓ IN STOCK!
    Buy Surplus As Low As $1,612.07
    $1,612.07
    SIEMENS 6SL3210-1SB12-3UA0

    SIEMENS

    6SL3210-1SB12-3UA0

    DISCONTINUED BY MANUFACTURER 01/10/2019, CONVERTER POWER MODULE, SINAMICS S120, INPUT: 1 PHASE 200-240 VAC 50/60 HZ, OUTPUT: 2.3 AMP, 3 PHASE (0.37KW), FRAME SIZE: BLOCKSIZE FSA INTERNAL AIR ...
    ✓ IN STOCK!
    Buy Surplus As Low As $575.26
    $575.26
    PULS CD5.241-L1

    PULS

    CD5.241-L1

    DC/DC CONVERTER, 14-32 VDC INPUT, 24 VDC OUTPUT, 3.8 AMP, 92 WATT, NEC CLASS 2
    ✓ IN STOCK!
    $845.69 Buy Surplus As Low As $507.41
    $507.41
    SIEMENS 6SL3210-1SE26-0AA0

    SIEMENS

    6SL3210-1SE26-0AA0

    DISCONTINUED BY MANUFACTURER, S120 PM340-IP20FSD-A40022,W/LINE FILTER , 6SL32101SE260AA0 , 6SL3210-1SE26-0AA0
    ✓ IN STOCK!
    $21,454.00 Buy Surplus As Low As $12,873.00
    $12,873.00
    BEL FUSE LK2540-7RB1

    BEL FUSE

    BEL POWER SOLUTION

    LK2540-7RB1

    POWER ONE, LK2540-7RB1,LK25407RB1, POWER SUPPLY AC/DC, DUAL-OUT,15V/15V, 5A/5A,150W,15-PIN
    ✓ IN STOCK!
    $1,745.10 Buy Surplus As Low As $1,047.06
    $1,047.06
    SIEMENS 6SL3210-1KE12-3UF2

    SIEMENS

    6SL3210-1KE12-3UF2

    POWER CONVERTER, SINAMICS G120C R, 3AC380-480V, +10/-20% 47-63HZ, 75KW AT 150% 3S, 110% 57S, 100% 240S HIGH OVERLOAD: 0, 55KW AT 200% 3S, 150% 57S, 100% 240S UNFILTERED EXTERNAL 24V I/O INTE ...
    ✓ IN STOCK!
    $1,066.80 Buy Surplus As Low As $677.08
    $677.08
    SIEMENS 6SL3210-1KE12-3UB2

    SIEMENS

    6SL3210-1KE12-3UB2

    INVERTER DRIVE, SINAMICS G120C, 3 PHASE, 380-480 VAC, 47-63 HZ, LOW OVERLOAD: 0.75KW AT 150% 3S / 110% 57S / 100% 240S, HIGH OVERLOAD: 0.55KW AT 200% 3S / 150% 57S, I/O INTERFACE: 6DI / 2DO ...
    ✓ IN STOCK!
    $949.20 Buy Surplus As Low As $585.00
    $585.00
    PHOENIX CONTACT QUINT-PS/24DC/24DC/20

    PHOENIX CONTACT

    QUINT-PS/24DC/24DC/20

    DC/DC CONVERTER, SINGLE PHASE, INPUT: 24 VDC, OUTPUT: 24 VDC / 20 AMP, 2.2 W, 1.5KV INSULATION VOLTAGE, DIN RAIL MOUNTING, METAL, (2320102)
    ✓ IN STOCK!
    $1,384.14 Buy Surplus As Low As $713.98
    $713.98
    Repair Yours Contact Us
    WEIDMULLER G408

    WEIDMULLER

    G408

    DISCONTINUED BY MANUFACTURER, UPAK ISOLATOR, DC IN / DC OUT, 10 MV - 100 V INPUT, 0-10 / 0-5 VDC OUTPUT, 0-20 / 4-20 / 0-1 MA OUTPUT, DIN RAIL
    ✓ IN STOCK!
    Buy Surplus As Low As $707.76
    $707.76
    Repair Yours Contact Us
    SIEMENS 6SL3210-1KE12-3AP1

    SIEMENS

    6SL3210-1KE12-3AP1

    DISCONTINUED BY MANUFACTURER, COMPACT CONVERTER, SINAMICS G120C, 6 DIGIAL INPUTS, 2 DIGITAL OUTPUTS, 1 ANALOG INPURS, 1 ANALOG OUTPUTS, 0.75 KW, 150% OVERLOAD FOR 3 S, 380-480 VAC, 47-63 HZ, ...
    ✓ IN STOCK!
    Buy Surplus As Low As $936.27
    $936.27
    SIEMENS 6SL3210-1KE11-8AB1

    SIEMENS

    6SL3210-1KE11-8AB1

    DISCONTINUED BY MANUFACTURER 01.10.2016, INVERTER DRIVE, SINAMICS G120C, RATED POWER 0.55 KW, 2.3AMP, 3PHASE, 380-480VAC, 47-63HZ, SUCCESSOR: 6SL3210-1KE11-8AB2
    ✓ IN STOCK!
    Buy Surplus As Low As $940.00
    $940.00
    Repair Yours Contact Us
    SIEMENS 6SL3310-1TE35-0AA3

    SIEMENS

    6SL3310-1TE35-0AA3

    SINAMICS S120 CONVERTER POWER MODULE 3AC 380-480V, 50/60HZ, 490A (250 KW) INTERNAL AIR COOLING FRAME SIZE: CHASSIS SUPPORT OF THE EXTENDED SAFETY INTEGRATED FUNCTIONS INCL. DRIVE-CLIQ CABLE ...
    ✓ IN STOCK!
    $57,061.00 Buy Surplus As Low As $37,225.56
    $37,225.56
    SIEMENS 6SL3210-1KE21-3AF1

    SIEMENS

    6SL3210-1KE21-3AF1

    SINAMICS G120C RATED POWER 3AC380-480V +10/-20% 47-63HZ LOW OVERLOAD: 5,5KW AT 150% 3S, 110% 57S, 100% 240S HIGH OVERLOAD: 4,0KW AT 200% 3S, 150% 57S, 100% 240S INTEGRATED FILTER CLASS A EXT ...
    ✓ IN STOCK!
    $2,391.66 Buy Surplus As Low As $1,723.00
    $1,723.00
    SIEMENS 6SL3210-1KE15-8UF2

    SIEMENS

    6SL3210-1KE15-8UF2

    CONVERTER, SINAMICS G120C, RATED POWER 2.2 KW, 150% OVERLOAD FOR 3 SECONDS, SUPPLY VOLTAGE 3 PHASE 380-480 VAC 47-63 HZ, UNFILTERED I/O INTERFACE, SAFE TORQUE OFF, PROFINET-PN PROTECTION, EX ...
    ✓ IN STOCK!
    $1,364.90 Buy Surplus As Low As $565.24
    $565.24
    SIEMENS 6SL3210-1KE15-8AF2

    SIEMENS

    6SL3210-1KE15-8AF2

    POWER CONVERTER, SINAMICS G120C PN 2, 3 PHASE, 380-480 VAC, 47/63 HZ, 2.2 KW RATED POWER, INTEGRATED FILTER, CLASS A, I/O-INTERFACE, IP20
    ✓ IN STOCK!
    $799.26 Buy Surplus As Low As $607.53
    $607.53
    Repair Yours Contact Us
    SIEMENS 6SL3210-1PE21-4AL0

    SIEMENS

    6SL3210-1PE21-4AL0

    POWER MODULE, SINAMICS, PM240-2, 3 PHASE, 380-480 VAC, 47-63 HZ, HIGH OVERLOAD: 4KW FOR 200% 3S / 150% 57S / 100% 240S, BUILT IN CLASS A FILTER, IP20
    ✓ IN STOCK!
    $1,997.10 Buy Surplus As Low As $1,518.30
    $1,518.30
    Repair Yours Contact Us
    SIEMENS 6SL3203-0BE21-8BA0

    SIEMENS

    6SL3203-0BE21-8BA0

    SINAMICS LINE FILTER CLASS B FOR POWER MODULE FSB BASE MOUNTING POSSIBLE 380V-480V 3AC 23.5A , 6SL3203-0BE21-8BA0
    ✓ IN STOCK!
    $1,048.00 Buy Surplus As Low As $574.29
    $574.29
    SIEMENS 6SL3210-1KE23-2UB1

    SIEMENS

    6SL3210-1KE23-2UB1

    COMPACT CONVERTER, SINAMICS, G120C RATED POWER 15.0KW WITH 150% OVERLOAD 3 SEC, 3AC380-480V +10/-20%, 47-63HZ UNFILTERED I/O-INTERFACE: 6DI 2DO1AI1AO , 6SL3210-1KE23-2UB1
    ✓ IN STOCK!
    $3,578.00 Buy Surplus As Low As $2,147.00
    $2,147.00
    SIEMENS 6SL3210-1KE23-2AP1

    SIEMENS

    6SL3210-1KE23-2AP1

    DRIVE, CONVERTER, SINAMICS G120C, 3 PHASE, 380-480 VAC, 47-63 HZ, LOW OVERLOAD: 15 KW AT 150% 3S / 110% 57S / 100% 240S, HIGH OVERLOAD: 11 KW AT 200% 3S / 150% 57S / 100% 240S, INTEGRATED FI ...
    ✓ IN STOCK!
    $4,136.00 Buy Surplus As Low As $2,482.00
    $2,482.00
    Repair Yours Contact Us
    SIEMENS 6SL3210-1KE17-5UP1

    SIEMENS

    6SL3210-1KE17-5UP1

    SINAMICS G120C RATED POWER 3,0KW WITH 150% OVERLOAD FOR 3 SEC 3AC380-480V +10/-20% 47-63HZ UNFILTERED I/O-INTERFACE: 6DI, 2DO,1AI,1AO SAFE TORQUE OFF INTEGRATED FIELDBUS: PROFIBUS-DP PROTECT ...
    ✓ IN STOCK!
    $1,440.00 Buy Surplus As Low As $542.38
    $542.38
    PULS QTD20.241

    PULS

    QTD20.241

    DC/DC CONVERTER, 480W, 360-600VDC IN, 24 -28VDC OUT, 20-17.5AQTD20.241
    ✓ IN STOCK!
    $1,295.69 Buy Surplus As Low As $777.41
    $777.41
    CARLO GAVAZZI CPTDINAV53HA1AX

    CARLO GAVAZZI

    CPTDINAV53HA1AX

    COMPACT POWER TRANSDUCER, CPT-DIN ADVNCD, 3-PH, 400/690VLL, 90-260VAC/DC, 1X0-20MA OUT
    ✓ IN STOCK!
    $838.57 Buy New $838.57
    $503.14
    SIEMENS 6SL3210-1SE14-1UA0

    SIEMENS

    6SL3210-1SE14-1UA0

    DISCONTINUED BY MANUFACTURER, POWER CONVERTER MODULE, MODEL: 340, INPUT: 3 PHASE, 380-480 VOLTS AT 4.8 AMPS, 50/60HZ, OUTPUT: 3AC 0-INPUT V AT 4.1 AMPS, INTERNAL AIR COOLING
    ✓ IN STOCK!
    Buy Surplus As Low As $1,155.04
    $1,155.04
    SIEMENS 6SL3210-1SE13-1UA0

    SIEMENS

    6SL3210-1SE13-1UA0

    DISCONTINUED BY MANUFACTURER 10.01.2019, CONVERTER POWER MODULE, SINAMICS S120, 3 PHASE INPUT, 380-480 VAC, 50/60 HZ, 3.8 AMP, 3.1 AMP OUTPUT, 1.1 KW
    ✓ IN STOCK!
    Buy Surplus As Low As $735.20
    $735.20
    SIEMENS 6SL3210-1SE23-8UA0

    SIEMENS

    6SL3210-1SE23-8UA0

    SINAMICS S120 CONVERTER PM340 POWER MODULE INPUT: 380-480 V 3AC, 50/60 HZ OUTPUT: 3 AC 38 A (18.5 KW) TYPE OF CONSTRUCTION: BLOCKSIZE FRAME SIZE FSD INTERNAL AIR COOLING
    ✓ IN STOCK!
    $15,097.00 Buy Surplus As Low As $9,059.00
    $9,059.00
    Repair Yours Contact Us
    PULS SLAD4.100

    PULS

    SLAD4.100

    AS-INTERFACE DC/DC CONVERTER, INPUT: 24 VDC, OUTPUT: 4 AMP, 30.6 VDC, 3 W AT 60 DEGREES C, 50 MVPP MAX RIPPLE/NOISE, SCREW TYPE TERMINALS, DIN RAIL MOUNT
    ✓ IN STOCK!
    $1,520.69 Buy Surplus As Low As $912.41
    $912.41
    SIEMENS 6SL3210-1KE12-3AF2

    SIEMENS

    6SL3210-1KE12-3AF2

    FREQUENCY CONVERTER, SINAMICS, 3 PHASE, 380-480 VAC (47-63 HZ), 0.75 KW, IP20, SUCCESSOR FOR: 6SL3210-1KE12-3AF1
    ✓ IN STOCK!
    $1,149.48 Buy Surplus As Low As $773.85
    $773.85
    SIEMENS 6SL3210-1KE14-3UB2

    SIEMENS

    6SL3210-1KE14-3UB2

    CONVERTER, THREE PHASE, 380-480 VAC INPUT, I/O INTERFACE, 1.5 KW/2 HP POWER, IP20 ENCLOSURE PROTECTION , 6SL3210-1KE14-3UB2
    ✓ IN STOCK!
    $1,016.00 Buy Surplus As Low As $737.00
    $737.00
    SIEMENS 6SL3210-1PE27-5AL0

    SIEMENS

    6SL3210-1PE27-5AL0

    POWER MODULE, SINAMICS G120 PM240-2, W/ BUILT IN CL. A FILTER, W/ BUILT IN BRAKING CHOPPER, INPUT: 70 AMP 3 PHASE 220/380 - 277/480 VAC 47-63 HZ, OUTPUT: 75 AMP 3 PHASE 0-INPUT V 0.550 HZ, I ...
    ✓ IN STOCK!
    $10,584.00 Buy Surplus As Low As $6,986.00
    $6,986.00
    SIEMENS 6SL3211-1PE21-8AL0

    SIEMENS

    6SL3211-1PE21-8AL0

    SINAMICS G120 POWER MODULE PM240-2 WITH BUILT IN CL. A FILTER WITH BUILT IN BRAKING CHOPPER 3AC3
    ✓ IN STOCK!
    $6,706.00 Buy Surplus As Low As $4,666.00
    $4,666.00
    SIEMENS 6SL3211-1PE18-0UL1

    SIEMENS

    6SL3211-1PE18-0UL1

    SINAMICS G120 POWER MODULE PM240-2 UNFILTERED WITH BUILT IN BRAKING CHOPPER 3AC380-480V +10/-10%
    ✓ IN STOCK!
    $3,130.00 Buy Surplus As Low As $2,379.00
    $2,379.00
    SIEMENS 6SL3210-1PE14-3AL1

    SIEMENS

    6SL3210-1PE14-3AL1

    POWER MODULE, SINAMICS PM240-2 SERIES, 3 PHASE, 4.7-5.5 AMP, 480 VAC, 550 HZ, 1.5 KW, INTEGRATED CLASS A FILTER, W/ BRAKE CHOPPER, PLUG-IN SCREW TERMINALS, -25 TO +55 DEGREES C, IP20
    ✓ IN STOCK!
    $1,116.15 Buy Surplus As Low As $638.00
    $638.00
    SIEMENS 6SL3203-0BE23-8BA0

    SIEMENS

    6SL3203-0BE23-8BA0

    SINAMICS LINE FILTER CLASS B FOR POWER MODULE FSC BASE MOUNTING POSSIBLE 380V-480V 3AC 49.4A , 6SL3203-0BE23-8BA0
    ✓ IN STOCK!
    $1,598.89 Buy Surplus As Low As $1,276.61
    $1,276.61
    SIEMENS 6SL3210-1KE23-2AB1

    SIEMENS

    6SL3210-1KE23-2AB1

    COMPACT CONVERTER, SINAMICS G120C, 3 PHASE, 380-480 VAC, 47-63 HZ, LOW OVERLOAD: 15KW AT 150% 3S / 110% 57S / 100% 240S, HIGH OVERLOAD: 11KW AT 200% 3S / 150% 57S / 100% 240S, INTEGRATED FIL ...
    ✓ IN STOCK!
    $4,024.00 Buy Surplus As Low As $2,415.00
    $2,415.00
    Next
    1 2 3 4 5 6 7 8 9 10 11
    Related Categories
    Battery Charger Electrical Cable/Wire Enclosure Fan/Ventilation Fuse Power Supply UPS Voltage Regulator