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erfect Switch Power-Gate single and dual rectifier solid state battery isolators
Perfect Switch Power-Gate solid state Uni-Directional DC Relays
PERFECT SWITCH SOLID STATE UNI-DIRECTIONAL DC RELAYS
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Perfect Switch "POWER-GATE" Uni-Directional DC Relays are the Best, Most Efficient and Most Powerful Solid State Products on the Market.
Available For Industry,
Marine, RV, Cars, Trucks, Aircraft & Military Applications
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Quantity Discounts Available.
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POWER-GATE PRODUCT PAGES
 
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Perfect Switch Power-Gate solid state Uni-Directional Relays

Quick Specs:
Uni-Directional Relays

Current Rating: 100 to 300 Amps
Operating Voltage: 6.5 to 36 VDC
(12 Volt, 24 Volt and 36 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

  • 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.

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.

Power-Gate uni-directional DC relay applications

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

  • Manually triggered relay
  • Low Voltage Disconnect (fully autonomous)
  • Combination of manual and automatic response
  • Precision Circuit Breaker
Common uses include military, aeronautic, automotive, marine, industrial,machinery, photovoltaic, and fleet utility.

PACKAGE CHARACTERISTICS:

  • Vacuum-formed Acrylonitrile Butadiene Styrene (ABS)
  • Black 2-part, flame retardant filled epoxy - electronics grade
  • Three integrated LED's for visual status and diagnostics
  • Four .250" integrated mounting holes
  • 5/16-18 x .500" machined brass connection posts
  • 6-32 brass ground post with provided ring terminal
  • 10-pin Molex control harness
  • Vinyl post insulators
  • Weight: approximately 14 ounces (0.396kg)

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Pricing: Please refer to the Pricing Chart below.
Questions/ Want to place an order? Call us at 778-340-0060 or Email Us
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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
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Questions/ Want to place an order? Call us at 778-340-0060 or Email Us
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Perfect Switch Uni-Directional Relay Information

POWER-GATE Solid State Relays are constructed based on their patented arrayed MOSFET technology. MOSFET transistors have an integrated body diode and depending on the application's direction of current flow, two primary configurations of POWER-GATE Relays are offered: uni-directional and bi-directional. All relays can be manually controlled, autonomously controlled, or a mix of both manual and automatic features.

Uni-Directional Relays are designed to sit between a source and a load. Some examples would be a relay sitting between and battery and a motor, or between a battery and an inverter. Current will only flow in one direction from the battery to the load its powering.

Uni-directional Relays can be controlled manually, triggered when the user applies system Voltage to the device's trigger input. When trigger is applied the relay closes (conducts current), and when trigger is removed, the relay opens (ceases to conduct current). They can also be configured to work autonomously where the on-board micro controller decides when to conduct current, or not to conduct current based on system Voltage, timing, or current cues. With this kind of flexibility built into every relay, devices can be configured to serve as:

  • 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.
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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 PRODUCTS
 

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ISOLATOR DEVICES/ RECTIFIERS

POWER-GATE Battery Isolators are industry leading, high performance, one-way electrical valves. They are commonly deployed in multi-battery applications where independent discharge or battery separation is required. Never confuse conventional battery isolators with POWER-GATE battery isolators. POWER-GATE devices enjoy ultra-low on-resistance and require no heat sinking and no airflow at currents up to 600 Amps.

Power-Gate rectifiers are the most efficient and reliable available

Recommended by EnerSys (manufacturer of Odyssey, Hawker, Loadhog, Powersafe, General, NP, Ironclad, Genesis, Heritage, and Varta batteries), and utilized in both military and civilian applications, POWER-GATE Battery Discharge Controllers insure that power gets to where it's needed without the excessive heat and Voltage drop typified by more common, lesser performing silicon and Schottky devices. Unlike conventional silicon and Schottky isolators, POWER-GATE's achieve sub-100 micro-ohm performance, even as the currents climb through 600 Amps; that's over 1,000% more efficient than traditional silicon and Schottky technology. With heat being the primary killer of electronics, engineering heat OUT of the product yields unparalleled reliability.

Questions/ Want to place an order? Call us at 778-340-0060 or Email Us

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