PERFECT SWITCH SOLID STATE UNI-DIRECTIONAL DC RELAYS

Quick Specs: Uni-Directional Relays Gen 4.1 Current Rating: 100 to 300 Amps Operating Voltage: 6.5 to 48 VDC (12 Volt, 24 Volt and 48 Volt models available) Voltage Drop at Max Current: 30mV Temperature Range: -40 to +105 C Weight: 14.7 ounces Dimensions: 5.40" x 2.86" x 1.57" Pricing: From $291.00 USD* See Pricing Details Below...

Uni-Directional DC Relays Gen 4.1 Designed to switch DC current from a source to a load Low Voltage, high current capability Industry-leading, ultra-low on-state resistance response to low or high Voltage thresholds (optional) timers to delay on or off (optional) precision circuit breaker functionality (optional) Sleep mode for ultra-low current draw (optional) Internationally patented arrayed MOSFET technology Light weight No heat sinks or airflow required No de-rating required over full temperature range Fully encapsulated solid state design Differentiation between in-rush and shorted conditions Over-current protection Specifically designed for automotive, military, marine, aerospace, industrial, test fixtures, and various 12 and 24 Volt OEM applications, POWER-GATE devices are engineered to handle shock and high-vibration environments. Our MOSFET-based relays are well suited for switching both large inductive loads and sensitive electronic equipment like power inverters, communications apparatus, or compressors. Unlike conventional mechanical relays, POWER-GATE relays have no contacts to arc, bounce, and degrade over time. Ultra-low trigger current makes POWER-GATE perfect for power sipping electrical systems where battery management is critical. Capable of switching currents between 100 Amps and 300 Amps, POWER-GATE may be the solid state switching solution you've been looking for. Devices can be customized for opto-isolation, latching, external Vcc, external status, logic feedback, and other various features. If you need to switch from a source to a load, and mechanical relays won't cut it, POWER-GATE may be your solution. IMPORTANT: If you have a Balmar External Voltage Regulator connected in the system please advise so that we can program the trigger time to one minute (Balmar regulators have a 35 second delay before they power up).

A solid state uni-directional relay can be used to switch on/off high current loads like motors, inverters, lights and communications equipment. Unlike mechanical relays, POWER-GATE relays don't arc, require minimal trigger current and are highly reliable in dust and vibration laden environments.

APPLICATIONS:
An arrayed MOSFET SSR designed to switch and control DC. POWER-GATE is factory programmable to behave as follows:

Common uses include military, aeronautic, automotive, marine, industrial,machinery, photovoltaic, and fleet utility.

PACKAGE CHARACTERISTICS:

Click on the above images for a larger image...

POWER-GATE DEVICE OPTIONS & OPTION PRICING:
Opto Isolated Input	Add $22.00 USD to device price
Under-Voltage Shutdown Feature	Add $16.00 USD to device price
Over-Voltage Shutdown Feature	Add $22.00 USD to device price
Circuit Breaker Functionality	Add $45.00 USD to device price
Sleep Mode Power Saver	Add $13.00 USD to device price

• Low Voltage Disconnects (LVD).
  Placed between a battery and loads, the device will allow the battery to power accessories connected to the output of the relay. If the battery Voltage dips below a specific low voltage threshold, the relay will open and stay open until the Voltage is sensed to be above a specific turn-on Voltage. For example, the relay can be used to power several hundred Amps of accessories connected to the relay output. On a 12 Volt system, if the Voltage drops to 12.3 Volts for at least one minute, the device will sense that as a stable, low Voltage condition and open the relay. The relay will stay open until the system Voltage is sensed to be 13.0 Volts indicating a charging source has been applied. When 13.0 Volts is sensed, the relay will close restoring the connection between the accessories and the battery. Low Voltage disconnects are common in marine and fleet applications and are often called LVD's or Voltage sensitive relays. POWER-GATE is far more than just a low Voltage disconnect as it can provide both low Voltage disconnect and high Voltage disconnect (HVD) functionality, under and over current functionality, handle in-rush current, and provide short circuit protection all in a compact and ultra-efficient module.
• Programmable Autonomous Relays.
  Placed between a battery and loads, the relay can be factory programmed to respond to under-Voltage, over-Voltage, under-current, over-current, or provide logic feedback to the user's system. When configured as a programmable autonomous relay, let us know what you need and Perfect Switch will program the device to suit your application.
• Circuit Breakers.
  Placed between a source and loads, the device can be programmed to differentiate between typical in-rush conditions, and an over-current or shorted condition which causes the relay to open ceasing current conduction between the source and load. Once open, it's typically programmed to stay latched open until a reset signal is applied. Think of it as a very smart, very flexible, very fast circuit breaker.
• Standard Relays.
  Placed between the source and load. Much like typical relays where the user applies system Voltage to the device's trigger input so the relay closes and conducts current. Removal of the trigger opens the relay so it ceases to conduct current.
• Bi-Directional Relays are designed for bi-directional current flow and are designed to sit between two sources. Some examples would be a relay sitting between two batteries where current could flow from battery A to battery B and visa-versa, or between a battery and an inverter/charger when current will flow from the battery to the inverter during the conversion from DC to AC, but the relay will also have to allow charging current to flow from the inverter to the battery when the inverter/charger is actively charging the battery. A back-to-back MOSFET configuration enables current to flow in a bi-directional fashion.
  

Questions and Answers for Uni -Directional Relays:

1) Can uni-directional solid state relays be used in lieu of mechanical relays?

The short answer is "it depends." Instead of a moving, arc'ing, mechanical connection, POWER- GATE solid state uni-directional relays use semiconductors called MOSFETS to silently conduct current. MOSFETs have a 'body diode' layer that can conduct current through the MOSFET, even if the MOSFET is not technically "on." This can cause the MOSFETs to overheat and fail under some conditions, which is why the direction of current flow it critical. A POWER-GATE uni-directional relay is designed to sit between and source of Voltage/current, and a load ... full stop. If there's a circumstance where Voltage on the output can exceed Voltage on the input, the MOSFETs might be compromised and a uni-directional configuration is not suitable; rather a bi-directional device.

2) Why are solid state relay more desirable than mechanical relays?

Most subscribe to the concept that a device with no moving parts will last longer than a device with moving parts. When switching current under load, contact degradation takes place due to the electrical arc generated when the contact surfaces make and break. Over time, contact surface pitting occurs and what started as a clean and efficient surface for transferring power degrades to a pitted, rough, high-resistance connection yielding significant enough heat to eventually kill the mechanical relay.

Solid state relays have no moving parts, and no contact surface area to degrade. This means far greater longevity and consistent performance over millions of cycles. SSR's require dramatically less current to "turn-on" verses their mechanical counterparts. Solid state relays require the use of a printed circuit board and the high current device s we manufacture require a large grid of MOSFETs to achieve peak performance. As such solid state relays tend to cost more than mechanical relays, but they offer a level performance, reliability, efficiency and customization not found in mechanical relays.

Perfect Switch POWER-GATE ultra efficient Uni-Directional DC Relays, Battery Isolators, Battery Rectifier Relays and more for sale Internationally, across the USA and all across Canada including Toronto, Montreal, Calgary, Ottawa, Edmonton, Mississauga, Winnipeg, Vancouver, Brampton, Hamilton, Quebec City, Surrey, Langley, Laval, Halifax, London, Markham, Vaughan, Gatineau, Longeil, Burnaby, Saskatoon, Kitchener, Windsor, Regina, Richmond, Richmond Hill, Oakville, Burlington, Sudbury, Sherbrooke, Oshawa, Barrie, Kingston, Cambridge, Coquitlam, Whitby, Guelph, Kelowna, Saanich, Victoria, Nanaimo, Thunder Bay, St. John's, Red Deer, Kamloops, Fort MacMurray, Fredericton, Grande Prairie, North Bay, Whistler, Prince George, Pickering, North Vancouver, Aurora, Shawinigan, Moncton, Saint John, Lethbridge & more.

Copyright getlithium.com, Lithionics Battery and Respective Copyright Holders 2022. All rights reserved.