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# of Outlets
12 Outlets
110V AC
120V AC
208V AC
Ease of Installation
Advanced (Installs > 60 minutes)
Middle Atlantic
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Solve and Prevent Power and Grounding Issues for Critical and Sensitive AV Installations
Middle Atlantic ISOCTR-5R-208-2 IsoCenter Rackmount Isolation Transformer & Load CenterMiddle Atlantic ISOCTR-5R-208-2 IsoCenter Rackmount Isolation Transformer & Load Center
Middle Atlantic ISOCTR-5R-208-2 IsoCenter Rackmount Isolation Transformer & Load Center
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Middle Atlantic ISOCTR-5R-208-2 IsoCenter Rackmount Isolation Transformer & Load Center
Item# 87639
Price: Normally $4864.66 
Hot Deal $3648.50
Free shipping on orders over $175 - See Details


  • Provides effective AV system isolation from electrical noise
  • Saves labor and material cost by using a higher voltage feeder and integrated circuit breakers
  • Helps prevent impact of voltage induction on ground wire feeder
  • Very high efficiency toroidal transformer - greater than 98%
  • Eighteen receptacles for load distribution

Essential Info

The Middle Atlantic IsoCenter™ Rackmount Isolation Transformer System provides protected, same-phase, isolated 120VAC circuits to power your AV systems. Many electrical issues can arise when designing a system, including ground loops and common-mode/differential-mode high frequency noise. These problems can arise from poor or improper wiring techniques and from equipment designed with lesser quality common-mode rejection ratio (CMRR). Equipment problems cannot always be resolved, but the IsoCenter system helps prevent the negative effects of all these problems.

Operating at efficiencies greater than 98% and performing an automatic shutdown if hazardous input voltage conditions are detected The IsoCenter provides the critical foundation for optimal system performance. A newly derived AV reference ground helps prevent ground loops and provides the lowest possible noise floor for high gain applications. Negligible audible noise & negligible magnetic leakage (less than half that of a standard power brick) means that the IsoCenter can be installed directly inside the equipment rack, where it is most beneficial.

More Info

Master Power 2-Pole Circuit Breaker:
Switches the main power on and off to the primary side of the isolation transformer provides 25A at 208V of over-current protection.

Surge Protection:
100,000Amp 2-stage surge and spike protection with dry contact status notification.

Load Center Breakers:
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).

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.

The IsoCenter system is housed in a rack mountable steel enclosure with a built in rear rail telescoping support. Overall dimensions: 7" high (4RU), 14.4" deep, 19" wide at the mounting ears and 17.5" wide at the chassis body, enclosure is black powder coat.

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.

Remote Branch Circuit Extension:
Hardwire up to two remote branch circuits directly to unit.

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.

All control circuits and relays are grouped onto two printed circuit boards with terminal strip connections for all wiring points.


Manufacturer:Middle Atlantic
Manufacturer Product No.:ISOCTR-5R-208-2
Power: 208V Single Phase input
Surge Protected: 100,000 Amps
Remote Branch Circuit Protection:Yes
Racking Height: 7 Inches (4 space)
Depth:14.4 Inches
Rear Mounting Range:17.8" to 24.8"
Termination:NEMA L6-30P
Load Distribution:18 Receptacles


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