Dekraft Low-Voltage Power Distribution and Control Switchgear

Engineering selection and supply of Dekraft VA-730 air circuit breakers, VA-300 moulded enclosure breakers, KM-102 contactors, and DEKV060 variable frequency drives for industrial distribution.

Air Circuit Breakers VA-730 Series

Dekraft VA-730 air circuit breakers serve as incoming and bus-tie devices for primary electrical distribution in main switchboards. Equipped with electronic trip units type M and H, these units provide selective power protection across industrial and commercial facilities.

Series: VA-730, VA-731, VA-732, and VA-733
Application: main distribution boards and substations
Parameters: rated current 630–6300 A, Icu up to 120 kA
Assemblies: arc chutes, motor mechanisms, and trip units

Moulded Enclosure Circuit Breakers VA-300

Dekraft VA-300, VA-330A, and VA-350E moulded enclosure circuit breakers provide dependable protection for electrical distribution networks. Compact engineering accommodates demanding industrial duty cycles, safeguarding feeder cables against overloads and short circuits.

Series: VA-300, VA-302, VA-330A, VA-350E, VA-300RC
Application: power distribution switchboards and panels
Parameters: rated current 16–1600 A, breaking capacity 25–50 kA
Assemblies: trip units, auxiliary contacts, and rotary handles

Modular Circuit Breakers VA-103 and VA-201

Dekraft modular miniature circuit breakers comprising VA-101, VA-103, and heavy-duty VA-201 mount onto standard DIN rails for branch circuit protection. Designed with dual snap locks and multi-plate arc dividers, these units deliver stable performance across building distribution panels.

Series: VA-101, VA-103, VA-103M, VA-201, and VA-105 DC
Application: sub-distribution enclosures and control panels
Parameters: current 1–63 A, breaking capacity 4.5 kA, 6 kA, 10 kA
Assemblies: bimetal strips, electromagnetic coils, and terminals

Residual Current Devices UZO-03 and RCBOs

Electromechanical residual current circuit breakers UZO-03 NEW and integrated RCBO units safeguard personnel against electric shock and prevent electrical fires. The pure electromechanical trip mechanism operates independently of line voltage, maintaining full security during neutral faults.

Series: UZO-03 NEW 2P/4P, AVDT-63, and DIF-103
Application: socket branch circuits, damp rooms, and panels
Parameters: rated current 16–100 A, sensitivity 10 to 300 mA
Assemblies: toroidal transformers, test buttons, and latch poles

Electromagnetic Contactors KM-102 and Overload Relays

Dekraft KM-102 electromagnetic contactors paired with RT-02 thermal overload relays deliver reliable switching for three-phase induction electric motors. Featuring snap-on mounting for DIN rails or chassis plates, they withstand continuous industrial cycling across pumps and blowers.

Series: KM-102, KM-102 CAP for capacitors, and PM-102 starters
Application: pumping systems, compressors, ventilation, and PFC
Parameters: current 9–95 A, insulation voltage 690 V, duty AC-3
Assemblies: magnetic coils, contact bridges, and auxiliary blocks

Variable Frequency Drives DEKV060 Series (VFD-510)

Dekraft DEKV060 variable frequency drives provide precise speed regulation for induction electric motors powering conveyors, industrial fans, and pumping loops. Supporting sensorless vector control and Modbus RTU networking, they deliver high starting torque during demanding plant cycles.

Series: DEKV060 (VFD-510) in single-phase and three-phase builds
Application: conveyor drives, pump skids, mixers, and fan units
Parameters: voltage 220 V and 380 V, overload 150 % (60 s), 180 % (3 s)
Assemblies: dynamic brake units, detachable LED panels, and fans

Maintenance Protocols for VA-730 Air Circuit Breakers

Maintenance protocols for Dekraft VA-730 air circuit breakers sustain incoming and bus-tie switchgear reliability across industrial facilities.

Service technicians examine drawer travel smoothness, evaluate main contact resistance using micro-ohmmeters, and inspect arc chute degradation following high fault interruptions. When contact erosion is observed, modular contact finger clusters undergo refurbishment or replacement.

Calibration checks for electronic trip units type M and H verify accurate pick-up thresholds and tripping delay times under simulated fault signals.

Inspection and Testing Methods for VA-300 Moulded Enclosure Breakers

Dekraft VA-300, VA-330A, and VA-350E moulded enclosure circuit breakers protect power distribution networks and industrial feeder lines against overloads and short circuits.

Periodic inspections involve testing insulation resistance across poles with a 1000 V insulation tester, checking cable lug terminal tightening torque against engineering specifications, and performing infrared thermal scanning under full load.

For units with adjustable trip modules, thermal-magnetic thresholds are verified using primary current injection equipment, ensuring reliable tripping during system disturbances.

Selectivity Coordination and Field Verification of UZO-03 and VA-103

Miniature circuit breakers VA-103 and residual current devices UZO-03 NEW deliver selective branch protection across electrical sub-panels. Field commissioning verifies that time-current curves B, C, and D align with prospective fault currents in the distribution layout.

Electromechanical UZO-03 units undergo sensitivity testing with dedicated testers to confirm tripping threshold and delay parameters.

Type A units installed on circuits supplying pulsed loads maintain residual current detection and personnel protection even if the neutral conductor experiences an open fault.

Control Circuit Tuning for KM-102 Contactors and RT-02 Relays

KM-102 electromagnetic contactors combined with RT-02 thermal overload relays handle motor starting, stopping, and protection across industrial pumps, blowers, and air compressors.

Routine servicing includes inspecting arc shields, measuring control coil resistance, and checking main power contacts for mechanical wear. When silver alloy tips exhibit excessive erosion, contact bridge subassemblies are renewed.

Relays are adjusted to match motor full-load current while factoring in ambient conditions, preventing winding overheating.

Parameter Configuration and Commissioning of DEKV060 Drives

Dekraft DEKV060 series (VFD-510) variable frequency drives provide energy-efficient speed control for induction electric motors powering production machinery.

Installation engineers mount drives within climate-regulated control enclosures, connect shielded motor cables, and configure internal PID control loops. Depending on machine dynamics, scalar V/F or sensorless vector control mode is selected with automatic stator tuning.

Pumping loops utilize dedicated sleep logic and 4–20 mA pressure loop feedback, while ventilation units benefit from emergency fire run mode.

Comprehensive Service Routines, Overhaul, and Plant Commissioning

SpareX technical engineering teams coordinate low-voltage switchgear inspection, scheduled servicing, component replacement, and system commissioning for Dekraft equipment.

Field personnel verify busbar joint torque, replace worn trip mechanisms, remote motor operators, and instrument transformers, while verifying secondary protection wiring.

Following testing and electrical measurements, clients receive comprehensive technical inspection dossiers, coordination diagrams, and compliance documentation under standard industrial supply contracts.

Dekraft and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Dekraft and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.