HMR Series
Modular Rectifier
Hot-swappable N+1 rectifier modules that scale with the load and stay serviceable without dropping the bus.
- Models
- 0
- Rating
- 24–220 VDC · 25–100 A
- Reference
- HMR
The Hannibal HMR Series is a family of modular rectifiers and battery chargers that deliver stabilized direct current through high-frequency commutated (IGBT) switch-mode modules. Each system is built from one or more hot-swappable rectifier modules plus a monitoring module, so total power scales simply by adding modules — a compact, high-power-density solution for communication and industrial power systems that need a reliable, uninterrupted DC supply.
Available in 24VDC, 48VDC, 110VDC, 125VDC and 220–240VDC, every HMR system covers 25A to 100A and operates in an N+1 redundant, hot-swappable configuration: a single module can be replaced live without interrupting the load, maximising availability and minimising mean time to repair (MTTR). Peak efficiency exceeds 96%, reducing energy losses and operating costs, while fully digital control lowers component count and lifts reliability to an MTBF above 300,000 hours.
Designed for harsh and remote environments, HMR modules support a wide input voltage range, a wide operating temperature window (down to -40°C and up to +75°C with de-rating), temperature-compensated battery charging of VRLA lead-acid batteries, a built-in battery test function and intelligent battery management. A user-friendly front-panel HMI handles all settings and calibrations, and extensive remote monitoring is available over RS485, TCP/IP, SNMP, GSM, Ethernet, serial port and dry contacts.
5 products
Across the HMR range
Common technical platform
All HMR Series systems share the SDM high-frequency switch-mode platform: IGBT-based rectifier modules cooled by forced ventilation with front-to-back airflow, mounted in 19” rack or cabinet configurations, and operated in redundant (N+1) hot-swappable arrangements. Fully digital control reduces component count and improves reliability, delivering high power density, a small footprint and an MTBF above 300,000 hours at 25°C.
Standard equipment includes a room temperature probe, battery low-voltage disconnect (LVD), output breakers for loads, audible and LED alarms, and a user-friendly HMI through which all parameters and calibrations are set from the front panel. The platform supports temperature-compensated battery charging, a battery test function, built-in intelligent battery management and a time-stamped alarm & event logger, with remote monitoring over serial port, Ethernet, RS485, TCP/IP, SNMP, GSM and dry contacts.
Protection, monitoring & interface
- Hot-swappable, scalable, N+1 redundant modules with inrush current limiting and hot plug-in.
- Visual status indication: green (normal), yellow (warning), red (alarm), plus an audible alarm.
- Rectifier alarms for high/low mains, high temperature, rectifier failure, overvoltage, fan failure and communication failure.
- Temperature-compensated battery charging, automatic battery test and built-in intelligent battery management.
- Time-stamped alarm & event logger and monitoring of all parameters via the front-panel display.
- Remote monitoring via RS485, TCP/IP, SNMP, GSM, Ethernet, serial port and dry contacts.
- Output protection: overvoltage shutdown, high-temperature protection and short-circuit proof.
Battery compatibility
HMR Series modular rectifiers provide temperature-compensated charging and intelligent battery management for standby battery banks, with built-in LVD protection and battery test:
- Valve-regulated lead-acid (VRLA), AGM and Gel batteries.
- Vented lead-acid and other lead-acid chemistries.
- Compatible with leading battery brands including EnerSys and Exide.
- Battery low-voltage disconnect (LVD), battery test function and room temperature probe as standard.
Options & accessories
- Voltage drop diode unit and digital or analog voltage / current meters.
- Earth leakage current sensor (positive and negative) and door-open sensor.
- Internal cabinet lighting, anti-condensation heating resistance and redundant fans.
- Fusible surge suppression (AC/DC) and removal of input neutral on site.
- Cabinet colour to any RAL code, flexible cable entry (top / side / bottom / rear).
- Ingress protection up to IP66 for outdoor and harsh-environment installations.
- RS485, TCP, SNMP and GSM communication and an automatic battery test option.
Standards & compliance
- Electrical safety: EN / IEC 62368-1.
- EMC: ETSI EN 300 386 V2.1.1 and EN 61000-6-1 / -2 / -3 / -4.
- AC harmonics, flicker and fluctuations: EN 61000-3-2 / EN 61000-3-3.
- CE marked and RoHS compliant.