Powerbox PBSP 74O SERIES DC/AC Inverter - Railway (4kW)
The Powerbox PBSP 74O Series DC/AC Railway Inverter is a powerful and reliable 4kW solution designed for critical railway applications. Engineered for durability and stable power delivery, it provides clean AC power suited to onboard systems, signaling, and other essential railway functions. Key features include high efficiency, dynamic low volt...
Read MoreThe Powerbox PBSP 74O Series DC/AC Railway Inverter is a powerful and reliable 4kW solution designed for critical railway applications. Engineered for durability and stable power delivery, it provides clean AC power suited to onboard systems, signaling, and other essential railway functions.
Key features include high efficiency, dynamic low voltage control, and comprehensive protection against overloads, short circuits, and low voltage. The PBSP 74O Series delivers a true sinewave output with low total harmonic distortion, ensuring smooth operation for sensitive electronic equipment. Built to withstand harsh environments, this inverter is ideal for continuous use in railway settings, minimising downtime and maintenance needs.
This inverter provides a 230VAC, 50Hz output, with configurations suited to railway-standard DC input voltages. Its rugged construction and compliance with strict railway safety and EMC standards make it a dependable choice for mission-critical rail applications.
The Powerbox PBSP 74O Series is the optimal choice for railway systems requiring robust, high-performance AC power conversion and reliable operation in demanding conditions.
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Features
- 4000W DC/AC Inverter
- Rolling Stock Rail 74VDC Input
- Rugged Build
- High Surge Rating 12KW
- Input Spike & Burst Protected
- Model Variants available; -C. -CL. -D. -G. -H. -R. and -S
- OPERATIONS HANDBOOK AVAILABLE
Specifications
| INPUT | |
|---|---|
| Input Voltage: | 74Vdc (60-84Vdc) |
| Input Current | 40mA standby, 60A (74Vdc input), 160A max. |
| Startup voltage | 67Vdc: (-C, -D, -G, -H, -R, -Z, -ZS) 60Vdc: (-CL) |
| Under voltage cut-out | 59Vdc. |
| Under voltage re-set | 71Vdc. |
| Over voltage cut-out | 90Vdc. |
| Over voltage re-set | 87Vdc |
| Input Current | Standby: 40mA ON with no load: 400mA Pout = 4000W, Vin=74Vdc; 60A, Any load, 60V < Vin < 84Vdc; 160A max |
| OUTPUT | |
|---|---|
| Output Voltage | 240Vac ±5% |
| Output Frequency | 50Hz ±1% |
| Total Harmonic Distortion | 3% |
| Output power | 4kW continuous. (Ta=50C, PF=1.0) |
| Output current | 16.7A rms |
| Surge power | 5kW, 30min; 12kW, 3sec. |
| Efficiency | 90%–95% load dependent. |
| DISPLAYS, CONTROLS & ALARMS | |
|---|---|
| Front Panel Controls Variants -C, -CL,-D,-G,-Z,-ZS | DC Input 100A 10kA MCB ON/OFF Toggle SwitchAC Output 20A MCB/RCD |
| Front Panel Controls Variant -H | DC Input 100A 10kA MCB ON/OFF REMOTE Toggle SwitchAC Output 20A MCB/RCD |
| Front Panel Controls Variant -R | DC Input 100A 10kA MCB ON/OFF REMOTE Toggle Switch |
| Front Panel Displays All Variants | ON / Standby / Overload LED Overtemperature LED DC Volts Out of Range LED |
| Remote ON/OFF Control Variants -H, -R | Two pins on Alarm/Control connector for external voltage free contact. These pins are connected to internal circuitry which is connected to the 74Vdc input power |
| PROTECTION | |
|---|---|
| Input protection | 100A, AS3111, 10kA MCB Input Over / Undervoltage Cutout |
| Output overload and short circuit protection | Automatic shutdown Auto restart after 60 secs |
| Output protection | 20A, AS3111/AS3190 4.5kA C-Curve MCB/RCD. Mounted on inverter on all variants except -R. Supplied separately on -R variant Output neutral connected to inverter chassis earth on inverter side of MCB/RCD |
| Over temperature protection | Automatic Shutdown |
| Dialectric Strength | Input to Chassis: 1700Vdc Output to Chassis: 2250Vdc Input to Output: 4250Vdc |
| MECHANICAL PBSP-74O-C, CL-D | |
|---|---|
| Mechanical Outline | See Technical illustration |
| Construction | Powder coated aluminum chassis. |
| Dimensions | 490 x 300 x 235mm |
| Weight | 38kgs. |
| DC Input connector Mating connector,-C,-CL & -D | MIL-C-5015 MS3102 E28-22P F80 Six crimp pin chassis receptacle MIL-C-5015 MS3108 E28-22S F80 Right angle crimp pin chassis receptacle Supplied with unit |
| AC Output connector Mating connector,-C,-CL | MIL-C-5015 MS3102 E18-10S F80 Four crimp pin chassis receptacle MIL-C-5015 MS3106 E18-10P F80, PG-16 Four crimp pin plug with 16mm conduit fitting Supplied with unit |
| AC Output connector Mating connector,-D | MIL-C-5015 MS3106 E18-10P F80 Four crimp pin plug with strain relief Supplied with unit |
| Wiring | All internal wiring uses Radox 125 halogen free low smoke cable. |
| STANDARDS AND APPROVALS | |
|---|---|
| C-Tick | Designed to meet AS/NZS CISPR11: /EN50121-3-2 limits |
| MECHANICAL PBSP-74O-G | |
|---|---|
| Mechanical Outline | See Technical illustration |
| Construction | Powder coated aluminum chassis. |
| Dimensions | 490 x 300 x 235mm |
| Weight | 38kgs. |
| DC Input connector Mating connector | MIL-C-5015 MS3102 E28-22P F80 Six crimp pin chassis receptacle MIL-C-5015 MS3108 E28-22S F80 Right angle crimp pin chassis receptacle Supplied with unit |
| AC Output connector | Three Wilco WIBM110-LE, single phase 10A 3 flat IP56 insulated socket outlets |
| Wiring | All internal wiring uses Radox 125 halogen free low smoke cable. |
| MECHANICAL PBSP-74O-H and -R | |
|---|---|
| Mechanical Outline | See Technical illustration |
| Construction | Powder coated aluminum chassis. |
| Dimensions | 490 x 300 x 235mm |
| Weight | 38kgs. |
| DC Input connectorMating connector | MIL-C-5015 MS3102 E28-22P F80 Six crimp pin chassis receptacle MIL-C-5015 MS3108 E28-22S F80Right angle crimp pin chassis receptacleSupplied with unit |
| AC Output connectorMating connector | MIL-C-5015 MS3102 E18-10S F80Four crimp pin chassis receptacleMIL-C-5015 MS3106 E18-10P F80Four crimp pin plug with 16mm conduit fittingSupplied with unit |
| Alarm / Control Termination | Mating connectorMIL-C-5015 MS3102 E16-1S F80 Seven crimp pin chassis receptacle MIL-C-5015 MS3106 E16S-1P F80 Seven crimp pin plug with 16mm conduit fitting Supplied with unit |
| Wiring | All internal wiring uses Radox 125 halogen free low smoke cable. |
Technical Drawings
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.