Motor Control & Automation
DOL, star-delta and automatic starters, contactors, overload and protection relays, timers and panel accessories.
RangeStarters & contactors up to 300 A+
Overview
Motor Control & Automation
Motors drive most of the load in a typical factory, and the starter and protection around them decide how long they last. Garg Electricals supplies motor control and automation components for MCC builders, OEM panel makers and plant maintenance teams.
We supply DOL, star-delta and automatic starters, power contactors, thermal and electronic overload relays and timers. Our protection range includes phase-failure, phase-sequence and voltage monitoring relays from Minilec and others, which are widely used in the region to protect motors from single-phasing on rural and industrial feeders.
For panel builders we carry push buttons, selector switches, emergency stops, LED indicators, terminal blocks and other panel accessories from BCH, L&T, Siemens, Schneider Electric and C&S Electric.
Send us your motor list with kW ratings and starting method and we will put together the contactor, relay and starter combination for each feeder.
Range
What we supply
Motor starters
DOL, star-delta and automatic starters in enclosures, matched to motor kW and duty.
Contactors
Three-pole power contactors and auxiliary contactors with AC or DC coils for motor switching.
Overload relays
Thermal and electronic overload relays set to motor full-load current.
Timers
On-delay, off-delay and star-delta timers for sequencing and control.
Phase-failure & protection relays
Single-phasing, phase-reversal, voltage and motor protection relays.
Push buttons & indicators
22.5 mm push buttons, emergency stops, selector switches and LED pilot lamps.
Panel accessories
Terminal blocks, DIN rails, wiring ducts, panel meters and cooling fans.
Specifications
Spec range
| Parameter | Range available |
|---|---|
| Starters | DOL, star-delta, automatic star-delta, fully automatic |
| Contactors | Power contactors, AC-3 duty, AC / DC coils |
| Overload relays | Thermal and electronic, with matching contactor mounting |
| Protection relays | Phase-failure, phase-sequence, under / over voltage, motor protection |
| Panel accessories | 22.5 mm push buttons, selector switches, LED indicators, meters |
Availability of specific sizes and makes varies. Confirm against your BOQ.
Brands
Brands available
Authorised dealer
Authorised dealer
Supplied
Supplied
Supplied
Supplied
Applications
Where it is used
- Motor control centres and starter panels
- Pumps, compressors, blowers and conveyors
- Machine control panels and OEM equipment
- Protection of motors against single-phasing and voltage faults
FAQs
Frequently asked questions
When should I use a star-delta starter instead of DOL?
Direct-on-line starting draws roughly six to eight times the motor's full-load current. Star-delta starting reduces this inrush to about one third and is commonly used for larger motors where the supply or mechanical load cannot handle full DOL inrush. The right choice depends on the motor rating, the load and the local supply.
Why do I need a phase-failure relay?
A three-phase motor that loses one phase (single-phasing) can overheat and burn out quickly. A phase-failure relay trips the starter when a phase is lost, reversed or out of voltage limits.
How do I select the overload relay range?
Choose a relay whose setting range includes the motor's full-load current (from the nameplate), and set it at that current.
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