Specifications
- SKU Code
- PBB2S-28-3.5
- Brand
- Powerbox
- Output Power Capacity
- 27.6V
Description
The Powerbox PBB2S-28-3.5 is a reliable DC UPS system delivering 27.6V at 3.5A (100W), designed for critical backup in 24V systems. Engineered for secure power continuity, it includes LED indicators and relay outputs for monitoring and integrates easily into access control, security, and industrial environments.
- Input Voltage: Accepts universal 100–240V AC input
- Output Power: Provides 27.6V DC @ 3.5A (100W) continuous output
- Battery Charging: Includes a separate, current-limited battery charger output
- Status Indicators: Green LEDs for mains and DC OK status
- Relay Outputs: Form-C relays for mains and DC OK monitoring
- Mounting: Chassis mountable design for easy integration
- Application: Ideal for 24V backup in security, automation, and access control systems
The PBB2S-28-3.5 delivers stable, uninterrupted DC power with intelligent charging and monitoring—making it a dependable power solution for mission-critical systems.
POWERBOX DC UPS 27.6V @ 3.5A (100W) - CHASSIS MOUNT
Specifications
- SKU Code
- PBB2S-28-3.5
- Brand
- Powerbox
- Output Power Capacity
- 27.6V
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Description
The Powerbox PBB2S-28-3.5 is a reliable DC UPS system delivering 27.6V at 3.5A (100W), designed for critical backup in 24V systems. Engineered for secure power continuity, it includes LED indicators and relay outputs for monitoring and integrates easily into access control, security, and industrial environments.
- Input Voltage: Accepts universal 100–240V AC input
- Output Power: Provides 27.6V DC @ 3.5A (100W) continuous output
- Battery Charging: Includes a separate, current-limited battery charger output
- Status Indicators: Green LEDs for mains and DC OK status
- Relay Outputs: Form-C relays for mains and DC OK monitoring
- Mounting: Chassis mountable design for easy integration
- Application: Ideal for 24V backup in security, automation, and access control systems
The PBB2S-28-3.5 delivers stable, uninterrupted DC power with intelligent charging and monitoring—making it a dependable power solution for mission-critical systems.

