Electrical Equipment and Power Supply


VME power supplies – conduction cooled VMEbus power cards with 28V-DC or 270V-DC inputs are available with 3.3V-DC and 5V-DC outputs, 6U or 3U formats.

Military UPS systems – input voltages from 96V to 264V (47Hz to 400Hz) allow operation from poor quality AC sources for ground-based, shipboard, and airborne applications.

Water-cooled power cabinets – available with configurable, hot-swappable rectifier modules and embedded controllers, with power levels exceeding 100kW and compliance with MIL-STD-1399 and STANAG 1008.

Our naval DC-AC inverters provide 50Hz to 400Hz electrical power from APU or battery input source and are MIL-STD-810 qualified.


Equipped with custom designed mechanical features and connection interfaces, ASB thermal batteries power all defence systems where reliability needs to be combined with harsh environments.

Exclusive LAN technology imparts the highest specific power ratio to thermal batteries, to be installed for sonobuoys and decoys.

Due to their constructions, Thermal Batteries are the only energy sources to be totally autonomous and hence totally suited to new torpedoes applications.

With its strength in the field of hermetic seal for batteries, ASB has created ASB Hermetics, a glass-to-metal seal business unit.


Navies around the world use Hawker's technology and expertise in batteries. Its main propulsion batteries provide the power for many different classes of submarine.

The flat plate range covers capacities from 5,150Ah to 11,750Ah, including cells for standby batteries in nuclear powered boats and main propulsion in diesel-electric vessels.

Tubular plate, double-decker battery design for battery cells larger than 1m.

Flat plate BLC design. The BLC cell is a flat-pasted positive plate cell with an additional Bottom Lug Connection (BLC) to equalise current distribution.


Submarine cell 45 PS 13 for submarine U-209.

Surface submarine cell.

Exide's submarine batteries have been sold worldwide under different brand names - CEAC, Hagen, Sonnak and Tudor.


The 3RC10kF is a 10kw Transformer Rectifier Unit (TRU) specifically designed to convert standard ships' ac supply on Naval vessels to dc for the purpose of helicopter starting, compressor washing and helicopter servicing.

Power Conversion for Naval Applications: 4.5kw TRU with low magnetic signature.

24v dc Primary Distribution Cabinet – Gresham Power Electronics operates a Quality Management System assessed to BS EN ISO 9001.

An Automatic Changeover Switch as part of a Ship’s Power Distribution.

These Battery Chargers (500w and 1kw) are designed to meet the RFI requirements of DEF-STAN 59-41 below deck limits.


Batteries for submarines, armoured vehicles and tanks.

Lithium Batteries for radio sets, communications and indicator buoys.

Lithium Thermal Batteries for missiles, rockets and aircraft.

Aircraft Engine Starting Batteries.

Lightweight torpedo and heavy weight torpedo batteries for primary or combat torpedoes and batteries for secondary or exercise / practice torpedoes.


Static Automatic Bus Transfer (SABT) switches use silicon-controlled rectifier (SCR) power-switching elements to automatically transfer critical loads from a primary power source to an alternate power source.

The Integrated Power Node Delivery System (IPND) offers the latest in electrical distribution system reliability, survivability, power density and load power quality.

The Solid State Interrupter (SSI) is a unique and innovative electronic circuit breaker that can be programmed to adjust the trip cur-rent.

The new family of Air-Cooled Frequency Converters (ACFC) represents the next leap forward in refined, stable and reliable power delivery to central and distributed 400Hz systems.


Submarine floodlight.

Emergency navigation lights control panel (24V dc power distribution panel)

Area LED Light (Fluorescent replacement)

Dual supply 2 × 18W compact fluorescent light (electronic ballast)

Submarine emergency navigation light (battery backed LED light)


100kW DC power supply in Nema 4 cabinet used to provide a backup to battery power source for a missile launch application.

150kW DC power supply for shipyard submarine DC motor testing includes a dual output (600A, 250VDC and 1,200A, 125VDC), is cooled by dionized water, and contains a regenerative circuit.

60kW 270VDC power supply with 12 pulse rectifier for telecommunications of Minuteman missile systems (NAVSURFWARCENDIV).

90kVA dual output 400Hz frequency converter used for aircraft ground support shown with input and output cables. The input is selectable 480V / 220V / 380V, 50Hz / 60Hz. The frequency converter conforms to MIL-STD-704F and is UL 1012 labeled.

Three-phase battery chargers with charge / discharge capability, computer controlled via IEEE488/GPIB interface. Naval applications include submarine battery charging.


New Generation of Mains/Charger System for Emergency Power Supply - Input: 3x440 VAC 60 Hz, Output: 20-30 VDC.

State-of-the-Art Group of two 45 kVA 400 Hz Static Frequency Converters meet the high requirements of naval application.

Water-cooled charging generator for submarines.

Special DC-motor for driving hydraulic pumps on board submarines - vertical mounting.

Special fans for ship and battery compartment ventilation in submarines.

New Generation 2.4kWDC Uninterruptible Power Supply
New Generation 2.4kW DC Uninterruptible Power Supply for the US Navy's New Amphibious Transport Docking Vessel Program (LPD-17).
(PN 843-01)
3kVAAC UPS for the US Navy's LPD-17 Program with SNMP communications capabilities.
3kVA AC UPS for the US Navy's LPD-17 Program with SNMP communications capabilities. Fully Mil Hardened. Available as bulkhead or rack mounted.
(PN 833-01)
Helicopter Starter. 26VDC to 32VDC adjustable output with short term starting currents up to 1,000A.
Helicopter Starter. 26V DC to 32V DC adjustable output with short term starting currents of up to 1,000A.
(PN 137-01B)
Forklift Truck Battery Charger, charging up to 900 ampere-hour of batteries in less than 8 hours.
Forklift Truck Battery Charger, charging up to 900 ampere-hour of batteries in less than 8 hours.
(PN 225-01)
Multiple DC Output Embedded Power Supply for Critical Electronic Systems.
Multiple DC Output Embedded Power Supply for Critical Electronic Systems.
(PN 141-117-001)


Horizon low voltage switchboards – Masterbloc MB300 Navy, which include the new range of NT, NW navy circuit breakers.

Horizon Frigate's electrical production / distribution network and associated auxiliaries - this specific and innovative solution includes the new range of NT, NW navy circuit breakers.

The Merlin Gerin range of high current, air-breaking circuit breakers meets requirements of various navies for direct current electrical networks, covering 2,000A to 6,000A for network voltages up to 1,000V.

Masterpact NT and NW Navy devices incorporate the latest technology to enhance both performance and safety, including anti-shock and anti-vibration systems.

On-board main network supply for the Chilean Scorpene submarine - Schneider Electric supplied the propulsion switchboard, the main DC and AC power switchboards (battery cabinet) and the secondary switchboards for both submarines.


Integrated Platform Management System (IPMS).

Medium voltage switchboard.

PEM fuel cell module.

Permasyn propulsion system.


Medium voltage cast resin transformer, with AFWF cooling system, IP44 enclosure and anti-vibration supports.

Distribution transformer for natural air cooling with IP23 enclosure.

Air core inductor for conversion harmonic filtering.


Military COTS PRM and VTM DC-DC V•I chip modules.

Four-output DC power supply with rugged packagaing for extremely harsh environments.

Two and four-output, chassis mount, low-profile DC-DC converter assembly.

Full, half, and quarter brick DC-DC converters.

28VDC EMI filter and input accentuator module in a half-size brick.


The standard range of AC starters supplied by Whippendell Marine.

Whippendell Marine's automated motor-control and data-logging system as fitted in Astute class submarines.

Aviation ground power as fitted in Type 23 frigates.

The 1.5kVA inverter as fitted in the Type 45 destroyer.

A davit control panel employing variable speed drives for precise motor control.


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