01 / 06
Centralized Power Distribution
Supplies power to connected PRAESENSA equipment from one integrated unit, simplifying system wiring and power infrastructure.
Integrated Power Management
IP-connected and fully-featured
PRAESENSA Public Address and Voice Alarm System
PRAESENSA system components
PRA-MPS3 PRAESENSA Multifunction Power Supply
Three independent 48 V supplies for up to three amplifiers plus a 24 V output, a charger for one 12 V backup battery, and a 6-port OMNEO switch with fibre and PoE.
- 3 x 48 V Up to 3 Amplifiers
- 12 V Single Battery, 230 Ah
- 6 Ports SFP Fibre, 2 x PoE
IP-connected and fully-featured
PRAESENSA Public Address and Voice Alarm System
PRAESENSA system components
PRA-MPS3 PRAESENSA Multifunction Power Supply
Three independent 48 V supplies for up to three amplifiers plus a 24 V output, a charger for one 12 V backup battery, and a 6-port OMNEO switch with fibre and PoE.
- 3 x 48 V Up to 3 Amplifiers
- 12 V Single Battery, 230 Ah
- 6 Ports SFP Fibre, 2 x PoE
PRA-MPS3 · PRODUCT VIEWS
Explore the PRA-MPS3 Inside & Out
Explore the Bosch PRA-MPS3 multifunction power supply through its labeled front-panel power and fault indicators, plus rear connections for amplifier outputs, battery backup, network ports and control interfaces.
FRONT PANEL · 01 / 02
PRA-MPS3 · PRODUCT VIEWS
Explore the PRA-MPS3 Inside & Out
Explore the Bosch PRA-MPS3 multifunction power supply through its labeled front-panel power and fault indicators, plus rear connections for amplifier outputs, battery backup, network ports and control interfaces.
FRONT PANEL · 01 / 02
PRA-MPS3 · TECHNOLOGY IN ACTION
Supporting Uninterrupted System Operation
Explore how the Bosch PRA-MPS3 supports PRAESENSA with independent power supplies, supervised battery backup, integrated network switching and an emergency audio lifeline.
01 / 05 · Independent DC power supplies
Reliable power for system devices
The PRA-MPS3 provides independent regulated DC outputs for connected PRAESENSA equipment.
- Three separate 48 V DC supplies serve up to three compatible amplifiers.
- A separate 24 V DC supply supports a system controller or auxiliary device.
- A/B output connectors support redundant wiring; an output fault does not affect the other supply outputs.
02 / 05 · 12 V battery backup & charging
Power continuity when mains fails
The integrated charger and backup converters allow an external 12 V VRLA battery to support connected loads during a mains failure.
- A single 12 V battery simplifies backup infrastructure and eliminates series-battery balancing.
- Dedicated battery-to-48 V converters supply the amplifier outputs during backup operation.
- Temperature sensing and battery impedance supervision help identify battery condition and connection faults.
03 / 05 · Ethernet switching & PoE
Network connections in one unit
A built-in six-port OMNEO Ethernet switch helps connect distributed PRAESENSA equipment.
- Five RJ45 ports connect copper Ethernet links, with PoE available on two ports.
- One SFP port supports an appropriate fiber transceiver for longer network links.
- RSTP supports resilient network topologies with compatible PRAESENSA devices.
04 / 05 · System supervision & control
Status and external interfaces
Power, battery and network supervision help the PRAESENSA system detect faults and support maintenance.
- Mains, battery and DC output status can be supervised and reported through the system.
- Eight supervised control inputs can receive signals from external equipment.
- Eight voltage-free control outputs provide interfaces for external system functions.
05 / 05 · Emergency audio lifeline
Backup path for amplifiers
Dedicated lifeline interfaces give connected PRAESENSA amplifiers an analog audio backup path under supported failure conditions.
- Three amplifier lifeline connections can serve up to three compatible amplifiers.
- The lifeline complements the normal OMNEO audio/control connection.
- Emergency operation depends on compatible equipment and correct PRAESENSA configuration.
PRA-MPS3 · TECHNOLOGY IN ACTION
Supporting Uninterrupted System Operation
Explore how the Bosch PRA-MPS3 supports PRAESENSA with independent power supplies, supervised battery backup, integrated network switching and an emergency audio lifeline.
01 / 05 · Independent DC power supplies
Reliable power for system devices
The PRA-MPS3 provides independent regulated DC outputs for connected PRAESENSA equipment.
- Three separate 48 V DC supplies serve up to three compatible amplifiers.
- A separate 24 V DC supply supports a system controller or auxiliary device.
- A/B output connectors support redundant wiring; an output fault does not affect the other supply outputs.
02 / 05 · 12 V battery backup & charging
Power continuity when mains fails
The integrated charger and backup converters allow an external 12 V VRLA battery to support connected loads during a mains failure.
- A single 12 V battery simplifies backup infrastructure and eliminates series-battery balancing.
- Dedicated battery-to-48 V converters supply the amplifier outputs during backup operation.
- Temperature sensing and battery impedance supervision help identify battery condition and connection faults.
03 / 05 · Ethernet switching & PoE
Network connections in one unit
A built-in six-port OMNEO Ethernet switch helps connect distributed PRAESENSA equipment.
- Five RJ45 ports connect copper Ethernet links, with PoE available on two ports.
- One SFP port supports an appropriate fiber transceiver for longer network links.
- RSTP supports resilient network topologies with compatible PRAESENSA devices.
04 / 05 · System supervision & control
Status and external interfaces
Power, battery and network supervision help the PRAESENSA system detect faults and support maintenance.
- Mains, battery and DC output status can be supervised and reported through the system.
- Eight supervised control inputs can receive signals from external equipment.
- Eight voltage-free control outputs provide interfaces for external system functions.
05 / 05 · Emergency audio lifeline
Backup path for amplifiers
Dedicated lifeline interfaces give connected PRAESENSA amplifiers an analog audio backup path under supported failure conditions.
- Three amplifier lifeline connections can serve up to three compatible amplifiers.
- The lifeline complements the normal OMNEO audio/control connection.
- Emergency operation depends on compatible equipment and correct PRAESENSA configuration.
PRAESENSA · APPLICATION AREAS
Engineered for real-world environments
Explore how the Bosch PRA-MPS3 supports PRAESENSA public address and voice alarm installations through supervised DC power, battery backup and integrated networking across centralized or distributed system locations.
Campus application areas
Lecture hallsAcademic buildingsShared spacesCampus areas
Hospitality application areas
LobbiesRestaurantsConference areasGuest corridors
Retail application areas
Retail areasFood courtsAtriumsPublic areas
Infrastructure application areas
Passenger areasIndustrial buildingsOperational areasSafety communication
01 / 04 · APPLICATION
Universities & Campuses
Campus-wide PRAESENSA installations may distribute equipment across multiple buildings to support announcements, emergency communication and supervised system operation.
Relevant applications
- Multi-zone public announcements
- Supervised voice alarm distribution
- Flexible coverage across campus buildings
PRA-MPS3 contributionSupports local PRAESENSA equipment clusters with independent DC supplies, an integrated Ethernet switch and supervised battery backup for dependable campus installations.
02 / 04 · APPLICATION
Hotels & Hospitality
PRAESENSA installations in hospitality facilities can support background audio, guest announcements and voice alarm communications across multiple areas.
Relevant applications
- Background music across selected areas
- Guest information and announcements
- Voice alarm coverage across hotel zones
PRA-MPS3 contributionProvides supervised power to connected amplifiers and a system controller, with integrated battery charging to support continuity during a mains failure.
03 / 04 · APPLICATION
Shopping Malls & Retail
Retail and shopping environments benefit from dependable PRAESENSA equipment power for public announcements, background audio and emergency communications.
Relevant applications
- Zoned background music
- Promotional and customer announcements
- Public safety voice messaging
PRA-MPS3 contributionCombines mains-powered DC distribution with battery backup and network connections, helping reduce separate support hardware for suitable PRAESENSA equipment groups.
04 / 04 · APPLICATION
Transportation & Industrial
Transport and industrial PRAESENSA installations may use distributed equipment racks to support passenger messaging and site-wide safety communication.
Relevant applications
- Passenger information announcements
- Multi-area safety messaging
- Scalable, network-based audio distribution
PRA-MPS3 contributionIts battery-backed supplies, integrated network switch and amplifier lifeline interfaces help support resilient PRAESENSA equipment clusters in distributed installations.
PRAESENSA · APPLICATION AREAS
Engineered for real-world environments
Explore how the Bosch PRA-MPS3 supports PRAESENSA public address and voice alarm installations through supervised DC power, battery backup and integrated networking across centralized or distributed system locations.
Campus application areas
Lecture hallsAcademic buildingsShared spacesCampus areas
Hospitality application areas
LobbiesRestaurantsConference areasGuest corridors
Retail application areas
Retail areasFood courtsAtriumsPublic areas
Infrastructure application areas
Passenger areasIndustrial buildingsOperational areasSafety communication
01 / 04 · APPLICATION
Universities & Campuses
Campus-wide PRAESENSA installations may distribute equipment across multiple buildings to support announcements, emergency communication and supervised system operation.
Relevant applications
- Multi-zone public announcements
- Supervised voice alarm distribution
- Flexible coverage across campus buildings
PRA-MPS3 contributionSupports local PRAESENSA equipment clusters with independent DC supplies, an integrated Ethernet switch and supervised battery backup for dependable campus installations.
02 / 04 · APPLICATION
Hotels & Hospitality
PRAESENSA installations in hospitality facilities can support background audio, guest announcements and voice alarm communications across multiple areas.
Relevant applications
- Background music across selected areas
- Guest information and announcements
- Voice alarm coverage across hotel zones
PRA-MPS3 contributionProvides supervised power to connected amplifiers and a system controller, with integrated battery charging to support continuity during a mains failure.
03 / 04 · APPLICATION
Shopping Malls & Retail
Retail and shopping environments benefit from dependable PRAESENSA equipment power for public announcements, background audio and emergency communications.
Relevant applications
- Zoned background music
- Promotional and customer announcements
- Public safety voice messaging
PRA-MPS3 contributionCombines mains-powered DC distribution with battery backup and network connections, helping reduce separate support hardware for suitable PRAESENSA equipment groups.
04 / 04 · APPLICATION
Transportation & Industrial
Transport and industrial PRAESENSA installations may use distributed equipment racks to support passenger messaging and site-wide safety communication.
Relevant applications
- Passenger information announcements
- Multi-area safety messaging
- Scalable, network-based audio distribution
PRA-MPS3 contributionIts battery-backed supplies, integrated network switch and amplifier lifeline interfaces help support resilient PRAESENSA equipment clusters in distributed installations.
Key specs
- Supervised DC power supply for up to 3 PRAESENSA amplifiers and a system controller
- Single 12 V battery backup solution with integrated charging
- Automatic transition between mains and battery power
- Three independent 48 V DC amplifier power outputs
- Integrated 6-port Ethernet switch (5 RJ45 + 1 SFP)
- Two PoE-enabled network ports for compatible devices
- 8 supervised control inputs and 8 control outputs
- Three amplifier lifeline interfaces for emergency audio backup
- Integrated power, battery and network supervision
- Compact 19-inch, 2U rack-mount design
Bosch PRA-MPS3 – Technical Specifications
Explore the technical specifications of the Bosch PRA-MPS3 multifunction power supply, featuring supervised DC outputs, 12 V battery backup, integrated Ethernet networking and configurable control interfaces for PRAESENSA systems.
Specification | Value |
AC POWER & ELECTRICAL | |
| Nominal AC Input Voltage | 120–240 V AC |
| AC Input Voltage Tolerance | 108–264 V AC |
| AC Input Frequency | 50–60 Hz |
| Power Factor | 0.9–1.0 |
| Power Consumption — Fully Loaded | < 1150 W |
| Independent Amplifier Power Supplies | 3 |
| Amplifier DC Output Voltage | 48 V DC |
| Amplifier DC Output Current | 5.5 A per output (continuous) |
| Amplifier DC Output Connections | Dual A/B connectors per output |
| Auxiliary DC Output | 1 × 24 V DC |
| Auxiliary DC Output Current | 0.7 A continuous |
BATTERY & BACKUP POWER | |
| Backup Battery Type | Single 12 V VRLA battery |
| Supported Battery Capacity | Up to 230 Ah |
| Nominal Battery Input Voltage | 12.6 V DC |
| Battery Input Voltage Range | 9–15 V DC |
| Maximum Battery Input Current | 90 A |
| Battery Undervoltage Protection | Below 9 V |
| Nominal Charging Current | 8.7 A |
| Nominal Float Charging Voltage | 13.7 V |
| Battery Temperature Monitoring | External NTC temperature sensor |
| Battery Condition Monitoring | Battery impedance and connection supervision |
| Backup Changeover | Uninterrupted transition to battery power |
NETWORK & CONTROL INTERFACES | |
| Integrated Ethernet Switch | 6 ports total |
| Copper Ethernet Ports | 5 × RJ45 |
| Fiber Network Interface | 1 × SFP port |
| Power over Ethernet Ports | 2 × RJ45 |
| PoE Standard | IEEE 802.3af Type 1 |
| Maximum PoE Powered-Device Load | 12.95 W per PoE port |
| Ethernet Speed | 100BASE-TX / 1000BASE-T |
| Audio & Control Networking | OMNEO |
| Network Redundancy | RSTP |
| General-Purpose Control Inputs | 8, supervised |
| General-Purpose Control Outputs | 8, voltage-free |
| Amplifier Lifeline Interfaces | 3 |
MECHANICAL SPECIFICATIONS | |
| Dimensions (H × W × D) | 88 × 483 × 400 mm |
| Rack Mounting | 19-inch rack, 2U |
| Weight | 11.80 kg |
| Ingress Protection | IP30 |
| Case Material | Steel |
| Case Color | RAL 9017 Traffic Black |
ENVIRONMENTAL SPECIFICATIONS | |
| Operating Temperature | −5°C to +50°C |
| Storage & Transport Temperature | −30°C to +70°C |
| Relative Humidity | 5–95%, non-condensing |
| Operating Air Pressure | 560–1070 hPa |
| Operating Altitude | −500 to +5000 m |
| Cooling Airflow | Front to sides/rear |
SYSTEM SUPERVISION & PROTECTION | |
| DC Output Supervision | Independent output fault monitoring |
| Battery Supervision | Battery connection and condition monitoring |
| Mains Supply Supervision | Mains presence and fault detection |
| Device Supervision | Watchdog |
| Network Supervision | Network-link monitoring |
| Emergency Audio Backup | Analog lifeline interface for connected amplifiers |
Questions & answers
Know before you buy
Quick answers about the PRA-MPS3, and how it compares.
What power supply is required for a Bosch PRAESENSA public address and voice alarm system?
The Bosch PRA-MPS3 is a multifunction power supply designed for compatible PRAESENSA installations. It provides three independent 48 V DC amplifier supplies, a 24 V DC auxiliary supply, battery backup management and integrated network connectivity. The number of PRA-MPS3 units required depends on the connected equipment and overall system design.
What battery is compatible with the Bosch PRA-MPS3 power supply?
The Bosch PRA-MPS3 supports a single external 12 V VRLA (Valve Regulated Lead-Acid) battery, with a manufacturer-specified capacity of up to 230 Ah. The unit includes an integrated battery charger and battery supervision. The battery is purchased separately and should be sized for the required backup duration and connected load.
How long can the Bosch PRA-MPS3 provide battery backup during a power failure?
The PRA-MPS3 automatically switches to a connected backup battery when mains power fails. Backup duration is not fixed: it depends on battery capacity, condition, connected amplifier loads and system operation. A project-specific battery calculation is necessary to establish the required standby and alarm operating time.
Can one Bosch PRA-MPS3 power multiple PRAESENSA amplifiers?
Yes. One PRA-MPS3 provides three independent 48 V DC power outputs for up to three compatible PRAESENSA amplifiers, plus a separate 24 V DC auxiliary output. The actual equipment combination must be checked against the manufacturer's power requirements and the system design.
Does the Bosch PRA-MPS3 support Ethernet networking and PoE?
Yes. The PRA-MPS3 includes an integrated six-port Ethernet switch with five RJ45 connections and one SFP fiber interface. Two RJ45 ports support Power over Ethernet (PoE) for compatible PRAESENSA devices, helping simplify network connectivity in centralized or distributed installations.
What is the difference between a Bosch PRA-MPS3 power supply and a conventional UPS?
The PRA-MPS3 is a purpose-built PRAESENSA power and system-support unit, rather than a general-purpose UPS. In addition to supervised DC distribution and external battery charging, it provides network switching, control interfaces and amplifier lifeline connections. A conventional UPS primarily provides backup electrical power and does not inherently provide these PRAESENSA-specific functions.
What is the Bosch PRA-MPS3 price in Pakistan, and where can I buy it?
For Bosch PRA-MPS3 pricing in Pakistan, contact ESCO Pakistan to request a quotation and confirm availability. Share your PRAESENSA system configuration, required backup duration and number of connected amplifiers so the appropriate power-supply setup and battery requirements can be assessed. Final pricing depends on the confirmed product configuration and quotation.