40kW 60kW 80kW Wall-Mounted DC EV Charger Dual Gun Fast Charging Station

Product Overview: 40kW / 60kW / 80kW Wall-Mounted DC EV Charger with Dual Guns

What is this wall-mounted DC EV charger and which charging problems does it solve?

This unit is a wall-mounted DC EV charger built around a 40kW, 60kW or 80kW constant-power platform with two independently controlled output guns. Instead of occupying floor space, the cabinet bolts to an existing wall or column, which makes it the practical choice for underground parking decks, dealership workshops, hotel ramps and fleet depots where a pedestal would block traffic lanes or fail to meet fire-lane clearance rules.

Electrically, the charger accepts a 380-415V three-phase AC supply and delivers 150-1000V DC at up to 200A per gun, so the same cabinet serves 400V and 800V battery architectures. Peak conversion efficiency reaches 95.5%, power factor stays above 0.99 and THDi is held below 5%. The enclosure carries IP55 and IK10 ratings, communicates over OCPP 1.6J or OCPP 2.0.1, and supports optional MID Class B metering plus a Type A RCMU with 6mA DC residual-current detection.

For operators, the commercial value is simpler than the spec sheet suggests: two vehicles charge at once from one wall position, dynamic load balancing keeps the site inside its existing transformer rating, and OCPP back-office integration avoids vendor lock-in when the network grows. That combination shortens payback on commercial and semi-public charging projects.

Product Overview and Strategic Positioning

Wall-mounted DC charging sits in a specific gap. AC wallboxes are cheap but slow, delivering 7kW to 22kW and adding hours to a working vehicle. Freestanding DC chargers are fast but need a concrete plinth, a protective bollard and roughly one square metre of prime forecourt. The 40kW, 60kW and 80kW wall-mounted DC EV charger closes that gap: it delivers genuine DC fast charging from a bracket, reclaiming the floor area that a pedestal would consume. For a 60-bay underground garage, that difference is not cosmetic, it decides how many charge points the site can legally install.

The platform is offered in three power classes from one mechanical envelope. The 40kW version suits destination charging, hotel valet bays, dealership delivery areas and overnight depot charging where a two-hour top-up is acceptable. The 60kW version handles mixed retail and workplace traffic. The 80kW version targets taxi ranks, light commercial fleets and highway service areas where dwell time directly affects revenue per bay. Because the cabinet dimensions, mounting points, cable routing and user interface are shared across all three, a site owner can specify 40kW today and step up to 80kW later without re-engineering the installation or re-training staff.

Two charging guns are standard rather than optional. Each gun is managed by its own contactor and metering channel, so the charger either feeds two vehicles simultaneously at split output or allocates the full 80kW to a single vehicle that can accept it. This dual-gun architecture is what makes the unit economically viable per square metre: one wall bracket, one AC feed, one network connection and one OCPP identity serve two parking positions. For connectors, the cabinet is available with CCS1, CCS2, GB/T or NACS outlets, mixed in any pairing, so the same product family covers European, North American and Chinese EV fleets. Operators already running MIDA floor-mounted hardware will recognise the control logic, since the wall version shares its controller firmware, RFID whitelist handling and OCPP profiles with the larger 60kW and 80kW dual-gun DC charging station.

Technical Superiority and Topology Innovations

The conversion stage uses a modular architecture rather than a single monolithic rectifier block. Each 40kW charging module is an independent AC-DC unit with its own PFC front end, isolated DC output and CAN reporting. On the 80kW configuration, two modules operate in parallel; if one module faults, the charger derates gracefully instead of going offline, and a replacement module can be hot-swapped in about fifteen minutes without dismantling the cabinet. This is a deliberate design decision aimed at uptime, because a charger that is 75% available every day of the year will out-earn a marginally more efficient unit that spends a fortnight waiting for a service visit.

Power allocation is handled by a dynamic power distribution matrix rather than fixed split. When two vehicles are connected and both request maximum current, the controller divides available output according to priority rules that the operator defines in the back office: first-come-first-served, equal share, or time-weighted for high-turnover bays. When one vehicle tapers at the end of its charge curve, the released capacity is re-assigned to the second gun within two seconds. The result is that a 60kW cabinet with a 40kW and a 20kW vehicle connected will not deliver 30kW to each and waste the difference; it tracks each battery management system request and pushes the full 60kW where it can be accepted.

Output voltage spans 150V to 1000V DC, which matters more than the headline kilowatt figure. Older 400V passenger cars draw full current at the bottom of their pack voltage and taper early, while 800V platforms hold peak power far longer. A charger with a narrow window will deliver its rated power to one group and fall short on the other. The wide-range stage here keeps the 40kW, 60kW and 80kW ratings honest across both generations of vehicles, including light commercial vans, shuttle buses and depot trucks that frequently run battery packs above 700V.

Thermal design follows the same logic. Because the cabinet is wall-mounted, there is no plinth duct and no chimney effect, so heat must be removed horizontally. The chassis uses separate air paths for the power modules and the sealed electronics compartment, with temperature-controlled fans that stay off below roughly 40 degrees Celsius internal. Dust, brake particulate and road salt are drawn past a replaceable filter rather than across the control board. Above 55 degrees ambient the controller applies controlled derating, and below minus 30 degrees the internal heater brings the screen and modules into operating range before accepting a session.

Design and Engineering Highlights

Module 1: Compact Wall-Mounted Architecture and Driver Interface

The wall-mounted DC EV charger measures roughly 700 by 450 by 250 millimetres and weighs about 65 kilograms, a size that two installers can position without a crane. A 10-inch capacitive touchscreen carries the whole user journey: plug detection, connector selection, tariff display, progress, fault codes and receipt. Illuminated status bars on both flanks show gun state from twenty metres away, which reduces driver confusion in multi-bay garages. Cable management uses fixed side holsters rather than retractors, keeping the 5-metre leads off the floor. An RFID reader and QR code cover fleet card and smartphone authentication, and every screen string is multilingual out of the box.

Module 2: Modular Power Stack and Thermal Management

Behind the front panel sit one or two independent 40kW modules, each a self-contained rectifier with its own PFC stage, isolation transformer and control interface. The layout is arranged for serviceability: connectors are front-facing, modules slide on guides, and the high-voltage DC bus is segregated from the signal harness to reduce noise. Two isolated air channels separate module cooling from the controller compartment, and a washable filter protects the heatsinks from dust and brake debris. Temperature-controlled fans modulate rather than cycling hard, which cuts acoustic output in residential garages. Integrated DC fuses, surge protection and contactor monitoring round out the internal protection chain.

Module 3: OCPP Networking, Metering and Cloud Operations

The charger ships with OCPP 1.6J and OCPP 2.0.1 firmware selectable from the service menu, plus Ethernet, 4G and Wi-Fi interfaces. That means direct integration with most European and North American charging management platforms without a proprietary gateway. Optional MID Class B metering produces billing-grade energy data for public charging tariffs, while the default metering suits internal cost allocation. Operators can push firmware updates, RFID whitelists, tariff tables and load-balancing profiles remotely, and pull session logs, error histories and power curves. Local offline authorisation keeps known fleet cards working during a network outage, so a dropped SIM does not strand drivers overnight.

Module 4: Weatherproof Enclosure and Multi-Layer Electrical Safety

The steel enclosure is finished with an anti-corrosion coating and sealed to IP55, with IK10 impact resistance protecting the screen and shell from accidental knocks. Eight protection layers run continuously: overvoltage, undervoltage, overload, short circuit, earth leakage, over-temperature, surge and insulation monitoring. A Type A RCMU with 6mA DC detection guards against the residual currents a vehicle battery can introduce, and surge arrestors rated for the local grid handle lightning-induced transients. Insulation monitoring isolates a faulted session before any hazard reaches the user, and the emergency stop cuts the DC contactors instantly while logging the event for the operator.

Comprehensive Technical Specifications

The table below lists the factory configuration for the 40kW, 60kW and 80kW variants. Ratings are stated for a 380-415V three-phase supply, an ambient temperature of 25 degrees Celsius and a battery voltage above 500V DC. Where a figure varies by connector standard or regional certification the note column explains the difference, and custom configurations for OEM projects are quoted on request.

Three entries in that table deserve emphasis because they are the ones buyers question most. First, maximum output current is not fixed: it depends on pack voltage, so a vehicle sitting at 400V will not draw 200A from an 80kW cabinet even though the hardware allows it. Second, the operating range of minus 30 to plus 55 degrees Celsius refers to the ambient air around the cabinet, not the battery, and derating begins earlier in unshaded direct sunlight. Third, the standard warranty covers 24 months from delivery, with extended terms negotiated for fleet and OEM programmes.

Core Components and Reliability Engineering

Component selection drives the service history of any DC charger, so the bill of materials is deliberately conservative. Power modules come from established suppliers with field-proven rectifier topologies rather than first-generation designs. DC contactors are rated for the full breaking current of the cabinet, not the nominal continuous current, because a contactor that welds shut during a fault turns a repair into a safety incident. Charge controllers and RFID readers are shared across the MIDA range, which means a technician who has serviced any wall-mounted DC fast charging station in the fleet can service them all.

Protection is layered rather than duplicated. The AC side carries a moulded-case breaker, surge arrestor and phase monitoring. The DC side carries fuses, insulation monitoring and contactor weld detection. Between them, the controller supervises temperatures at six points, comparing heatsink, module, cabinet, screen, cable and ambient readings against independent thresholds. If any single sensor drifts out of range the controller flags it for maintenance rather than waiting for a shutdown, which moves faults from reactive callouts to scheduled visits. Every session is logged with timestamps, energy delivered, peak current, stop reason and error codes, giving technicians a history before they arrive on site.

Mechanical reliability gets similar attention. The enclosure uses a powder-coated cold-rolled steel body with stainless fasteners, and the door gasket is a moulded profile rather than a glued strip, because glued gaskets are the most common source of water ingress after three or four years. Cable entries are glanded and strain-relieved so that a driver pulling a lead cannot stress the internal terminations. The mounting bracket is adjustable, allowing the cabinet to sit plumb on uneven brickwork or a steel column,

Application Scenarios and Fleet Deployment

Underground and multi-storey car parks are the strongest fit, because the wall-mounted format solves a physical constraint before it solves an electrical one. Installing a 60kW or 80kW unit on a column serves two bays without sacrificing a parking position, and the absence of a plinth means no core drilling, no drainage tray and no bollard to protect. For landlords converting part of a deck into charging bays, this reduces both capital cost and the objection from fire and access consultants.

Fleet depots benefit differently. Vans, taxis and light trucks return at predictable times and stay for hours, which is exactly the duty cycle a 40kW or 60kW wall-mounted DC EV charger handles best. Because each gun meters independently, a depot can attribute energy to the correct vehicle account automatically, and the RFID whitelist prevents unauthorised use outside working hours. Dynamic load balancing lets the depot add charge points without a transformer upgrade, smoothing demand so that a 200A site supply can support several chargers that would otherwise trip the main breaker at shift change.

Destination charging is the third major use case. Hotels, restaurants, retail parks and dealerships want visible fast charging without a forecourt rebuild. A pair of wall-mounted cabinets on an external wall delivers four DC bays, which is enough to attract customers while keeping dwell times short enough that turnover stays healthy. Where a site already runs larger MIDA hardware, adding wall units lets the operator extend coverage into tighter corners, using the same DC EV charger range and the same back office.

Global Certifications, OEM/ODM Support and Warranty

The platform is built to IEC 61851-1 and IEC 61851-23 for conductive DC charging systems, uses IEC 62196 connector interfaces and complies with IEC 61851-21-2 electromagnetic requirements. CE and RoHS marking covers European deployment, and regional variants are available for North American and Chinese connector ecosystems. Test documentation, wiring diagrams and declaration of conformity are supplied with each shipment, which shortens approval work for contractors submitting to grid operators and local authorities.

OEM and ODM programmes are a core part of the offer rather than an afterthought. Buyers can specify housing colour and finish, printed branding, splash screen artwork, connector pairing, cable length, power class and firmware defaults. For larger projects, output power can be capped in software to match a site supply, and the OCPP identity can be pre-registered on the customer network before the units leave the factory. Because the 40kW, 60kW and 80kW models share a chassis and controller, a mixed fleet looks uniform on site and is supported by one spare-parts list, which materially reduces the spares inventory a distributor must carry.

Support covers remote diagnostics, firmware maintenance, spare module supply and technical training. Standard warranty is 24 months, with extended coverage and service-level agreements available for fleet and public-network customers. Consumables such as air filters and fans are field-replaceable, and the module-level design means the most expensive component can be swapped without replacing the cabinet.

Frequently Asked Questions

Does a 40kW wall-mounted DC charger make sense when 60kW and 80kW units cost only a little more?

For overnight depot charging and destination sites, yes. Vehicles that sit for two hours or more rarely accept the full output of an 80kW cabinet for the whole session, so the extra peak power is unused. A 40kW unit on a smaller breaker can also be added to a constrained supply without a service upgrade, which is often the deciding factor. Where dwell time is short and turnover matters, the 60kW or 80kW version earns its cost back faster.

Can the 60kW wall-mounted DC EV charger supply two vehicles at the same time?

It can, and that is the intended duty. Each gun has its own contactor and metering channel. With both vehicles connected the controller distributes output according to the priority mode configured in the back office, and it reallocates capacity as one vehicle tapers. If only one vehicle is connected, that vehicle receives the full 60kW available from the cabinet, subject to its own battery management limits.

What is the actual charging speed of the 80kW unit on real vehicles?

Output current is the limiting factor at low pack voltage. On a 400V vehicle drawing the full 200A, the charger delivers around 80kW and adds roughly 100 to 130 kilometres of range in thirty minutes for a typical 60kWh passenger car. On an 800V platform the same cabinet holds close to its rated power through a wider state-of-charge window, so the practical result is better, not worse. Cold batteries, high state of charge and shared-gun operation all reduce the figure.

How does a DC-DC solar DC charging setup differ from this AC-input wall charger?

A DC-DC solar charging architecture feeds photovoltaic output directly into the charger, bypassing the AC conversion stage, which avoids double conversion losses and typically lifts usable solar yield by several percentage points. The wall-mounted AC-input unit described here connects to the grid and is the correct choice for parking structures and depots that already have a three-phase supply. Where a site has substantial on-site generation, MIDA can supply DC-coupled variants so that solar energy reaches the vehicle battery with a single conversion step; the two approaches are complementary rather than competing.

Which OCPP version should be specified, and can it be changed later?

OCPP 1.6J remains the widest-supported profile across current charging management platforms, and it is the safe default for most commercial deployments. OCPP 2.0.1 is the better choice for new networks that need certificate-based security and richer device modelling. Firmware for both is installed on the charger and can be switched and updated remotely, so the decision is not permanently binding.

What maintenance does the unit require once installed?

Routine work is limited to replacing the air filter, inspecting cable and connector condition, and cleaning the touchscreen and status strips. The charger logs error codes and temperature history so technicians can plan interventions rather than reacting to failures. Power modules are hot-swappable, and because the 40kW, 60kW and 80kW models share components, one spare module can service a mixed fleet.