Contactor Suits Virtually Any Harsh Environment

Gigavac has launched the GX16, a low-cost 600A single-pole, single-throw (SPST) normally-open sealed contactor. The GX16 is 3in (76mm) tall and weighs 1.9lb (0.9kg) and expands the company's line of Epic sealed contactors - rated from 20A to 600A continuous duty - that can switch both DC and AC voltages up to 750V and is RoHS compliant. The contactor is 3in tall, 3.2in deep and 5.4in wide with easy-connect chassis-level power connections that eliminate the need to bend the large connecting power cables or develop special bus bars.

Markus Becke, vice-president of power products at Gigavac, said additional higher-current contactors will be released in 2010, including latching relays, integrated voltage and current sense ability, and time delay functionality. The GX16 was developed for large all-electric or hybrid-powered vehicles, buses, emergency vehicles, mining equipment, rail, and large solar and power back-up systems.

It is lightweight, requires low coil-hold power, can be mounted in any position, and can be used in nearly any harsh environment, including under water and at temperatures from -55C to +85C (up to 125C with special coils). The dual-coil design means one coil is automatically removed from the coil circuit once energised and only 8W of coil power is required for continuous operating. An optional SPST normally-open auxiliary contact driven off the main armature gives true indication of the main contact position.

Comments

Post a Comment

Popular posts from this blog

What is Class I Division 2?

Image
A Class I Division 2 is a location: (1) In which volatile flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are handled, processed, or used, but in which the liquids, vapors, or gases will normally be confined within closed containers or closed systems from which they can escape only in case of accidental rupture or breakdown of such containers or systems or in case of abnormal operation of equipment, or (2) In which ignitable concentrations of flammable gases, flammable liquid-produced vapors, or combustible liquid-produced vapors are normally prevented by positive mechanical ventilation, and which might become hazardous through failure or abnormal operation of the ventilating equipment. Class I Division 2 Classification Class I Division 2 refers to the ANSI/ISA 12.12.01 standard. This standard was previously UL1604 until UL recommended the newer ANSI/ISA standard be used and that all hazardous location products be certified under this standa...
Read more

FUSE SIZING CONSIDERATIONS FOR HIGHER EFFICIENCY MOTORS

Image
When selecting the proper fuse for short circuit protection in motor starting applications, it is important to not only ensure that the fuse will not nuisance open during motor start up times, but also that the fuse will coordinate as required with overload relays. When sizing fuses between 125% and 150% of the motor nameplate current, several advantages, including ease of coordination with an overload device, a smaller disconnect, and increased short circuit protection from a lower fuse rating, can be achieved. However, if sizing at this level prevents the motor from starting, it may then be necessary to increase the fuse ampere rating and it then becomes important to know the NEC sizing limitations. As of June 1, 2016, the US Department of Energy has mandated that newly manufactured electric motors will need to meet NEMA Premium® efficiency standards. As motor efficiencies increase, motor locked rotor currents can also be expected to increase. In addition to this, with across-the-lin...
Read more

7/8 16UN Connectors that Provide 600 Volts and 15 Amps

TURCK announces new A-Size 3 and 4-pin 7/8 16UN powerfast™ connectors that provide up to 600 Volts and 15 Amps of power. These IP67 rated connectors provide a modular wiring system designed to handle high current applications for machine power distribution, while providing resistance to vibration commonly associated with conveyors, motors and material handling applications. The cordsets are available with a tray rated, exposed run PVC flexlife ® cable, with or without STOOW rating, and 14 AWG wires that allow you to replace hard wiring with a robust, quick disconnect system that saves the time and money spent installing a conduit system. The A-Size powerfast line offers male and female, straight connectors, standard and custom lengths, and pigtails or extensions. To make the system complete, fully encapsulated mating receptacles, with 1/2”-14 NPT mounting threads are available.
Read more