Middle Atlantic IsoCenter™ Isolation Transformer System & Load Center

Provides Isolation From Electrical Noise While Solving Power and Grounding Issues

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What's special about this isolation system?

  • Designed for A/V or IT installations, this IsoCenter™ helps solve power and grounding issues like data corruption, electrical noise, or voltage spikes that can cause your equipment to give out over time
  • Input voltage monitoring with automatic shutdown to protect your equipment from voltage spikes when over/under input voltage is detected.
  • Two voltage options (240V or 208V) to provide the correct power needed
  • Equipped with 9 duplex receptacles to power 18 devices, such as rackmount lights, KVM Switches, cable or satellite boxes
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ETL ListedRoHS Compliant

If you need a transformer that will isolate electrical noise and give you a solid stream of electricity without voltage spikes or brown/blackouts, then choose Middle Atlantic's ISOCenter™. This system is comprised of an energy saving high-efficiency shielded transformer, control electronics, and a dedicated load center, all housed in a compact 7 inch (4 RMS) chassis.


MA-ISOCTR-5R-240-NS 240V IsoCenter™ Rackmount Isolation Transformer and Load Center 14.40" L x 19" W x 7" H 4 17.8" to 24.8" NEMA L6-30P 105 lbs
MA-ISOCTR-5R-208-NS 208V IsoCenter™ Rackmount Isolation Transformer and Load Center 14.40" L x 19" W x 7" H 4 17.8" to 24.8" NEMA L6-30P 105 lbs
  • Takes up only 4U of space leaving plenty of room for other networking or A/V devices
  • Provides four circuits of 20A overload protection to 18 receptacles for occasional power surges
  • High-efficiency toroidal transformer, greater than 98%, which means that there's less heat to dissipate inside your enclosure
  • Negligible magnetic leakage allows mounting within a rack, so your other components will not be negatively affected by electrical noise from this unit
  • UL Standard 1012
  • RoHS EU Directive 2002/95/EC compliant
  • 5 year warranty



Dimensions 14.40" L x 19" W x 7" H 14.40" L x 19" W x 7" H
Rack Units 4 RMS 4 RMS
Rack Mounting Width 19" 19"
Chassis Body Width 17.5" 17.5"
Enclosure Black Powder Coat Black Powder Coat
Operating Voltage 240V 208V
Voltage Range 210V to 266V
(will shut down below 210V and start back up at 214V & will shut down above 266V and start back up at 262V)
181V to 232V
(will shut dow below 181V and start back up at 185V & will shut down above 232V and start back up at 228V)
LED Indicators Green: within acceptable range
Red: Outside acceptable range
Green: within acceptable range
Red: Outside acceptable range
Voltage Range Monitor The voltage range monitor circuit will be incorporated to monitor the 240/208 Volt input. A green LED will illuminate to indicate that proper voltage is being applied to the transformer primary. A red LED will illuminate if the voltage is out of range (High or Low). This monitor LED function will operate when the main circuit breaker is in the “on” position. If the “out of voltage range” is detected a signal will be sent to the output power relay to disconnect the output power. Power on will automatically be re-initiated when the voltage is “in range”. A delay circuit is incorporated to allow short, out of voltage range aberrations to be ignored.
Master Power 2-Pole Circuit Breaker Switches the main power on and off to the primary side of the isolation transformer provides 20A at 240V of over-current protection. Switches the main power on and off to the primary side of the isolation transformer provides 25A at 208V of over-current protection.
Breakers Provides four circuits of 20A over-current protection to the designated banks of receptacles on the back of the unit Provides four circuits of 20A over-current protection to the designated banks of receptacles on the back of the unit
External Ground / Bonding Bus An external ground bus is located at the rear of the unit in order to provide a termination point for establishing a low impedance single point grounding system (SPG) for the rack enclosure and connected equipment. This bus is a seven (7) position grounding terminal strip (screw type). Also a connection point for local grounding electrode conductor (if required by code).
Transformer Includes a Toroidal isolation transformer, with a 98% high efficiency type with a proprietary alloy core, a single 120V secondary winding (all circuits on the same phase) with a Faraday shield.
Chassis The IsoCenter system is housed in a rack mountable steel enclosure with a built in rear rail telescoping support.
Power In-Feed Feeder circuit is pluggable. The unit is fed via a fixed molded “twist-lock” male plug (NEMA configuration L6-30P) and 10’ long power cord. A 30A Single Phase feeder circuit is required.
Power Output Receptacles The receptacle branch circuits are made up of eighteen (9 duplex) 20A specification grade gray receptacles, NEMA configuration is 5-20R. The receptacle labels are laser engraved indicating the circuit identification and bank arrangement.
Maximum Load The maximum load shall not exceed 41.66A @ 120V (5000 Volt-Amperes) continuous. A de-rating factor of 80% may be required under certain conditions of installation and/or NEC Requirements.
Controls All control circuits and relays are grouped onto two printed circuit boards with terminal strip connections for all wiring points
Listings The IsoCenter unit shall be ETL Listed to UL standard 1012 in the US and to CAN/CSA C22.2 #107.1 in Canada.








rack screwsRack Screws - Kendall Howard
Packed in a reusable tin with starter points to ensure easy installation, these screws are cold forged and heat treated to prevent stripping. Black finish.

iec power cordsIEC Power Cords - Middle Atlantic
Signal-Safe™ IECPower Cords from Middle Atlantic replace the standard power cords that come with electronic components, and are available in a variety of sizes, with standard or low profile, 90° angled plugs. These cables will not loop around and get tangled. Middle Atlantic's new IEC Power Cords are a great way to save space and eliminate excess cable slack in rack installations.


vertical lacer stripsVertical Lacer Strips - Middle Atlantic
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These Middle Atlantic fans are ideal for cooling your wall mount or cabinet enclosures. Fans are relatively quiet, 115 Volt with a choice of airflow of 50 CFM (cubic feet per minute) and 95 CFM.


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Equipped with 4 critical and 4 non-critical outlets, this UPS lets you provide extra protection to your most valuable circuits, and runs at only 9W, so it uses 75% less power than comparable products.

Eaton managed power distributionEaton ePDU Managed Power Distribution Units
Eaton® Managed PDUs give you total control over the power distribution in your data center. There are many models available offering an array of plug and outlet types, and the unit may be accessed remotely for 24/7 status checking.

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