Page last updated Oct 25, 2016 @ 03:22pm


RelianceControls_mb75.jpg (82617 bytes) RelianceControls_MBinside.jpg (23305 bytes) Reliance-MB75inside-new.jpg (115546 bytes) Reliance-MB75wiring-inletbox.jpg (86645 bytes) Reliance-MB75wiring-noinletbox.jpg (83794 bytes)
door open old style terminals
(not available)
new style sensors wiring to switch with inlet box  wiring to switch without inlet box
Click thumbnail image above to enlarge

Watt Meter Box
2 Watt Meters for 7.5kW Total

Don't operate your backup or alternative power electrical system blind!  Install this economical wattmeter box so you can see what is happening.  Perfect for monitoring generator load when your transfer switch or panel does not have meters.

NEMA 1 enclosure for indoor mounting is 4" x 7" x 2-3/4" deep and comes with knockouts and hinged front cover.  Meters sense the power using current transformers (CTs) factory installed inside box.  Field wiring is connected to four terminals in lower compartment.  Meter scales read in kW at 120VAC for each of two hot legs in a 120/240VAC 30 amp system.  Made in USA  

For maximum meter life we do not recommend direct mounting of enclosure on engine driven generators due to vibration.  Mount separately on an indoor wall.

Note that the old style product that had direct connect terminals was UL Listed.  However, the new style uses non-contact donut sensors.  Since it has no direct connection to the power system live conductors and operates at low voltage it is not UL Listed and does not have to be.



Item Number: MB75
Price: $79
Discounts begin at 5% for qty 5 and will be deducted by cart!
Shipping Weight: 2.5 lbs.
This item normally ships in approximately 3 days or less.


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