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Control Panels and Inverters Accessories

Acoustic Attenuation

AVMs, bases and rails

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Axial

Our

Capabilities

Integrated Control Excellence PSB UK Ltd, part of the WITT UK Group, manufactures sophisticated control panels and inverter systems that form the intelligent heart of modern ventilation installations. Our comprehensive capabilities span power distribution units, motor control centres (MCCs), intelligent motor control centres (iMCCs), variable-speed drives from 0.37kW to 2MW, ATEX-compliant panels for hazardous areas, and machine safety control systems meeting SIL-3 requirements. From single-fan control panels to complex building-wide ventilation management systems, we deliver turnkey solutions integrating seamlessly with existing infrastructure. Our Yorkshire facility houses dedicated panel assembly areas where qualified technicians construct panels to exacting standards, incorporating components from leading manufacturers including ABB, Siemens, Schneider, and Danfoss. Every panel undergoes rigorous testing including insulation resistance, earth continuity, functional testing, and witnessed factory acceptance testing, ensuring reliable operation in critical applications from hospital smoke control to tunnel ventilation systems.

Smart Technology for Energy Optimisation Modern ventilation demands intelligent control maximising efficiency whilst maintaining safety and comfort. Our inverter-based solutions achieve typical energy savings of 30-70% compared to traditional fixed-speed systems, with soft-start capabilities reducing mechanical stress and extending equipment life. Advanced features include automatic PID control maintaining setpoints whilst minimising energy consumption, harmonic filtering meeting G5/4 grid requirements, regenerative braking for high-inertia loads, and multi-pump/fan sequencing optimising system efficiency. Integration capabilities encompass BACnet, Modbus, and Profibus protocols for BMS connectivity, cloud-based monitoring enabling remote diagnostics, predictive maintenance algorithms preventing unexpected failures, and demand-controlled ventilation responding to occupancy and air quality. Whether controlling car park ventilation based on CO sensors, managing tunnel fans during emergency scenarios, or optimising HVAC systems for energy efficiency, our control solutions deliver measurable improvements in performance, reliability, and operating costs. Construction options include mild steel with IP ratings from IP54 to IP66, stainless steel 316L for corrosive environments, GRP enclosures for extreme conditions, and wall, floor, or machine-mounted configurations.

  • Variable-speed drives from 0.37kW to 2MW with harmonic filtering
  • ATEX-certified panels for Zone 1 and Zone 2 hazardous areas
  • SIL-3 rated safety systems for critical applications
  • BMS integration via BACnet, Modbus, Profibus protocols
  • Energy savings of 30-70% through intelligent control
  • Full design, manufacture, installation, and commissioning service

Why Choose

Control Panels

Tunnel

ENERGY EXCELLENCE

30-70% energy savings through variable-speed control and intelligent sequencing strategies.

Tunnel

CERTIFIED SAFETY

ATEX, SIL-3, and CE compliant panels meeting strictest UK and international standards.

Tunnel

SEAMLESS INTEGRATION

Full BMS compatibility with remote monitoring and predictive maintenance capabilities.

Frequently

Asked Questions

How much energy can inverters save on fan systems?
Variable-speed drives (VSDs) deliver dramatic energy savings due to fan affinity laws—power consumption reduces with the cube of speed reduction. A fan running at 80% speed uses only 51% of full-speed power, whilst 60% speed requires just 22% power. Typical applications achieve 30-50% energy savings, with some installations reaching 70% reduction. Additional benefits include reduced mechanical stress through soft-starting, extended equipment life from optimised operation, improved power factor reducing electricity charges, and elimination of wasteful throttling or damper control. Most installations achieve payback within 18-24 months through energy savings alone.
Intelligent Motor Control Centres advance beyond traditional MCCs by incorporating smart monitoring and control capabilities. Features include real-time monitoring of current, voltage, power factor, and energy consumption, predictive maintenance using vibration and temperature trending, automatic load management preventing overloads and optimising efficiency, remote access for diagnostics and control adjustments, and integration with building management systems. Our iMCCs provide comprehensive data enabling condition-based maintenance, reducing unexpected failures by up to 75%. They’re particularly valuable for critical ventilation systems where downtime affects life safety or production processes.
ATEX control panels for hazardous areas incorporate specialised features preventing ignition of explosive atmospheres. Requirements include Ex-d flameproof enclosures containing any internal explosion, Ex-e increased safety terminals preventing sparking, intrinsically safe circuits limiting energy to non-ignitable levels, and purge/pressurisation systems maintaining positive pressure. Components must carry appropriate ATEX certification with temperature ratings suitable for gas/dust present. Our ATEX panels comply with Directive 2014/34/EU, incorporating certified components, proper cable glands and sealing, earth monitoring systems, and comprehensive documentation for inspection authorities. Design expertise ensures safe, compliant operation in chemical plants, refineries, and other hazardous environments.
Yes, our control panels seamlessly integrate with all major building management systems through industry-standard protocols. Communication options include BACnet IP/MSTP for HVAC applications, Modbus RTU/TCP for industrial systems, Profibus for process control, and KNX for building automation. Integration enables centralised monitoring and control, automatic response to building conditions, energy optimisation across multiple systems, alarm management and event logging, and remote access for off-site management. We provide comprehensive point lists, control narratives, and commissioning support ensuring successful integration with existing infrastructure.
Safety is paramount in our control panel design, incorporating multiple protection layers. Standard features include motor overload protection preventing burnout, phase monitoring detecting supply issues, earth fault protection ensuring personnel safety, emergency stop circuits for immediate shutdown, and fire alarm integration for automatic smoke control activation. Advanced safety options include SIL-rated safety PLCs for critical applications, arc flash protection for personnel safety, lock-out/tag-out provisions for maintenance, backup power transfer for essential systems, and fireman’s override for emergency services control. All panels meet relevant standards including BS EN 61439, ensuring safe, reliable operation.
Comprehensive testing ensures reliable operation before deployment. Factory testing includes insulation resistance verification to BS EN 60204, earth continuity confirming protective bonding, functional testing of all controls and interlocks, and simulation of fault conditions verifying protection operation. Site commissioning encompasses cable testing and termination verification, motor rotation checks and parameter setting, integration testing with connected equipment, and performance validation against specifications. We provide detailed test documentation including factory acceptance test certificates, site commissioning records, and as-built drawings with circuit descriptions. Training ensures operators understand system capabilities whilst maintenance teams can effectively support installations throughout operational life.