We manufacture and supply high performance earth leakage relays that senses the earth leakage current for any equipment, such as L.T. Panels, Switch Boards, Generators, Transformers, Motors etc. Our earth leakage relays are provided with user settable (0-10sec) time delay.

Salient Features:
• Provided with auto / manual reset and test facility
• Choice of screw less terminals
• Indications for healthy, faulty and relay 'ON'
• Compact and superior design to fit on any standard mounting channel
• Complete wireless interior that makes it highly rugged and error proof

Our manufactured AC earth fault relays work with precision in their specified application. Designed as per industry standards and specifications, our AC/DC are superior in performance and service life. These relays have been set for a time delay of 0-10 second (settable) and can be mounted on any standard mounting channel.

Salient Features:
• Compact and aesthetic in design
• Wireless interiors, which make it highly rugged and error proof
• Choices of screw less terminals
• Provided with test, auto / manual – reset facilities
• Superior design to fit on any standard mounting channel

We design and supply latest technology AC/DC voltage relays for various uses in different industrial applications. Superior in quality, these have been designed in compliance with international standards and deliver flawless performance. The relay can be mounted on any standard mounting channel and its reset can be automatic or manual.

Salient Features:
• Available with pick-up and trip time delay in 3-phase voltage relays
• Superior design to fit on any standard mounting channel
• Choice of screw less terminals
• High accuracy
• Only 1/2 phase voltage relay with 2 user selectable voltage range by DIP switch
• Only 1/2 phase voltage relay with user selectable U/V or O/V range by DIP switch
• Test and auto / manual reset facility
• Signal and source (control supply) are separate
• High reliability

We are the only manufacturers to provide most compact(N22) AC/DC current relays. We provide current relays of specific requirements like under current and relays for motor protection.

Salient Features:
• Compact and aesthetic in design
• Wireless interiors, which make it highly rugged and error proof
• Choices of screw less terminals
• Provided with test, auto / manual – reset facilities
• Superior design to fit on any standard mounting channel

We manufacture and supply zero-defect and superior quality frequency relays that are used for continuously monitoring the line frequency. The line frequency is compared with a highly stable internal crystal-based frequency to attain error-proof results. In the case, the line frequency goes out of the selected range; relay changes the status after the SET time delay.

Salient Features:
• Smart design that will fit on any standard mounting channel
• Under and over Frequency relays with calibrated linear scale
• Available with choice of screw less terminals
• Complete wireless interiors
• Test and auto / manual reset facility
• Suitable for DG set applications
• High level of reliability

In the area of power protection, protech has a unique impression as a manufacturer of relay with quality, reliability and value for money. Innovative approach in design to serve various applications is our strength. Protech has wide variety of relays, appropriate for almost all possible applications in the field of power protection.

Salient Features:
• Micro /controller based highly accurate operation, RS485 output provider.
• Most compact & user friendly IDMT relay
Combined 'Low set' & 'High set' inversed definite minimum time(IDMT)relay.
• User selectable 10N-3 sec & 10N-1-3sec normal inverse waves.
• Wide input voltage range 90-270v Ac/Dc & 15-40 VDC.
• Facility to by pass high set.
• separate 'Alarm' & 'Trip' relay contacts.

We manufacture and supply superior performance timers for uses in various industrial applications. The reset time for these timers is unlimited operations at designed switching duty and the permissible voltage is 25% max. These can be wall mounted or direct.

Salient Features:
• The single 100 % solid state timer that is provided with percentage time elapsed indicator (PTEI)
• Available in both AC and DC input / output types
• Wireless interior, which makes it highly rugged & error proof
• Linear calibrated dial with 5% accuracy
• Available in 48 x 48 enclosure and 22.5mm enclosure

Design using latest Micro-Controller technology.
MIMIC type of front fascia makes it easy to use, even for an unskilled person.
ANNUNCIATION with flasher & buzzer both; including ACCEPT, RESET & TEST facility.

Salient Features:
• Most Compact & Simplest Diesel Engine Controller for FIRE HYDRANT System.
• MIMIC type front fascia makes it easy to use, even for unskilled person.
• INDICATION for Mains ON, FIRE, Engine RUN, Fuel, and all faults(Low lube Oil Pressure, Battery Low).
• PROGRAMMING not required.
• Load Changeover Works even in manual mode (when DC supply is not given).

We design & supply high performance battery chargers cum dischargers for various types of battery charging / discharging requirements. We incorporate latest technology to produce superior quality charger cum dischargers that provide an automatic float cum boost charging facility in constant current and constant voltage current modes. Superior in quality, our chargers have very small ripple content, which is as low as 2% RMS of maximum output value. On the other hand, the discharger will be of same capacity as that of charging, but will be of constant current type.

Our battery chargers cum dischargers offer flawless performance with long service life and are provided with all sorts of required protections, such as - semiconductor protection, ripple capacitor protection, output short circuit & over load etc.

We manufacture and supply a complete range of high performance traction battery chargers for all the standard ratings. Designed in compliance with international market standards and parameters, our range of traction battery chargers, includes - standard conventional uncontrolled two step traction chargers and Micro-controller based design constant voltage, constant current battery chargers.

Designed using the latest technology, our traction battery chargers deliver flawless performance with long service life. Our range varies from 12V to 72V up to 80 Amps. We are capable to design our products as per the requirements of our clients.

These chargers can be made as per required configuration. choice of configuration depend on the criticality of application, some of the most preferred configurations as are as follows:
. float cum boost battery charging with single set of transformer rectifier.
. float & boost chargers with separate transformer rectifier & controller circuit.

Salient Features:
• Unique Micro controller technology.
• Can handle wide input supply variation from -20% to +25%.
• Eliminates need for human judgement, hence avoids risk to batteries which occurs due to erroneous mode selection, thus increasing the life of batteries.
• Separate float & boost "Voltage Set" potentiometer makes it more user friendly.
• Provides protection with annunciation for almost all battery & chargers related faults.
• Manual modes of operation also provided.
• Senses dv/dt and di/dt for precise control.
• Uses combination of constant voltage and constant current charging.

We design and supply fully controlled static rectifiers as well as uncontrolled rectifiers for various applications, such as Electroplating, Etching, Anodizing, and more. We are capable to design rectifiers for different applications of varying capacity. With our experience and expertise of designing & manufacturing 10V/6000 Amps fully controlled rectifier for foil itching plants, we are capable to satisfy the various requirements of our clients.

We also offer AC/DC current injection test sets for testing of switch gear products with mV drop measurement. These injection test sets can also be used for testing AC Machines & their parts. Our AC/DC current injection sets are available in the capacities of up to 2000 Amps; in steps of 500 Amps.