{"product_id":"3-phase-sub-meter","title":"Three-Phase Electricity Sub Meter 100A","description":"\u003ch2\u003eMeter Your 3-Phase Electricity Usage\u003c\/h2\u003e\n\u003cp\u003eMonitor 3-phase circuits, sub-boards, or entire switchboards with the \u003cstrong\u003eReduction Revolution 3-Phase 100A kWh Sub Meter (RRSM03)\u003c\/strong\u003e. It’s accurate, feature-packed, and solar-ready.\u003c\/p\u003e\n\u003cp\u003eKey features include:\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Capacity \u0026amp; Accurate. \u003c\/strong\u003eMeasures up to 100 amps per phase with utility meter-grade Class 1 accuracy (±1%).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy DIN Rail Mount. \u003c\/strong\u003eFits on standard 35mm DIN rail taking up just 4 pole slots (71.5mm wide).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMulti-Parameter Monitoring. \u003c\/strong\u003eUse the large backlit LCD screen to scroll through dozens of electrical parameters beyond energy (kWh) including voltage (V), current (A), power and peak demand (W), reactive power (kVAr), power factor, frequency (Hz), phase-specific values and more.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSolar, Battery \u0026amp; EV Compatible. \u003c\/strong\u003eIt is a bidirectional sub-meter that stores both forward active energy ('imported' from the grid) and reverse active energy ('exported' to the grid).\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEasy Direct Wiring. \u003c\/strong\u003eLarge screw-down terminals with a straight-through design. It measures current internally without needing external CT clamps.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0150\/2930\/files\/RRSM03-side-render-RR_480x480.jpg?v=1788325495\" alt=\"3-Phase Sub Meter\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003eThe Reduction Revolution 3-Phase Sub Meter\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eTop Uses for Our 3-Phase kWh Meter\u003c\/h3\u003e\n\u003cp\u003eOur sub-meter lets you track usage at 3-phase properties without needing a separate electricity account or utility meter. The Reduction Revolution 3-Phase Sub Meter is ideal for:\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003e1. Split Electricity Costs Fairly\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThey are ideal where two or more commercial or residential users share a utility connection and want to split a power bill based on actual usage. For example:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThree-phase commercial tenancies, office building sub-tenancies, workshops, or multi-tenant factory units.\u003c\/li\u003e\n\u003cli\u003eLarge multi-dwelling residential or rural properties, secondary dwellings, or shared facilities.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003e2. Track Electrical Loads or Areas\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eSub-meters help you understand costs or analyse usage in detail across balanced or unbalanced loads. For example:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrack heavy three-phase equipment such as commercial HVAC systems, irrigation pumps, compressors, and large cool rooms.\u003c\/li\u003e\n\u003cli\u003eMonitor 3-phase EV fast charging infrastructure, industrial lifts, or high-bay lighting circuits.\u003c\/li\u003e\n\u003cli\u003eRecord power usage across individual distribution sub-boards across larger facilities.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\n\u003cstrong\u003e3. Monitor Solar, Batteries, Backup Power \u0026amp; EVs\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h4\u003e\n\u003cp\u003eThis bidirectional sub-meter is compatible with 3-phase power generation systems.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMeasure 3-phase commercial solar PV output independently of your power bill or solar inverter.\u003c\/li\u003e\n\u003cli\u003eTrack inflows and outflows to your commercial battery backup system.\u003c\/li\u003e\n\u003cli\u003eLog electric vehicle charger usage across single-phase or 3-phase charging stations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCustomers have also used our sub-meters to \u003cstrong\u003eimprove access\u003c\/strong\u003e to electricity usage data. For example, to easily check power use at a sub-board when the main utility meter is far away or locked inside a meter room or plant room.\u003c\/p\u003e\n\u003cul\u003e\u003c\/ul\u003e\n\u003ch2\u003eSpecifications - 3-Phase 100A kWh Sub Meter\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 33%;\"\u003eSupply Voltage\u003c\/td\u003e\n\u003ctd\u003e3x230(400)V AC 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Current\u003c\/td\u003e\n\u003ctd\u003e100 Amps per phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Usage\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;1W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAccuracy Class\u003c\/td\u003e\n\u003ctd\u003eActive Energy Class 1 (±1%), Reactive Energy Class 2 (±2%)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Range\u003c\/td\u003e\n\u003ctd\u003e0.01 to 999,999.99 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Type\u003c\/td\u003e\n\u003ctd\u003eLCD with blue backlight\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay Readings\u003c\/td\u003e\n\u003ctd\u003eScreen scrolls through over 50 parameters including Total\/Forward\/Reverse kWh, Active \u0026amp; Reactive Energy, Resettable kWh, Max Demand, Voltage (phase-to-phase, phase-to-neutral), Current, Active \u0026amp; Reactive Power, Frequency, Power Factor per phase and more. See manual below for full details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePulse Output\u003c\/td\u003e\n\u003ctd\u003e1000 impulses per kWh via optical and S0 interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBidirectional\u003c\/td\u003e\n\u003ctd\u003eYes. Measures electricity import (Forward Active Energy) and export (Reverse Active Energy).\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP51 (indoor use or inside a protected enclosure)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHousing Material\u003c\/td\u003e\n\u003ctd\u003eFire-resistant ABS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference Standards\u003c\/td\u003e\n\u003ctd\u003eEN50470-1\/3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Cable Capacity\u003c\/td\u003e\n\u003ctd\u003e25mm² per terminal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-25°C to 70°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e71.5mm wide × 72mm deep × 90mm height (4 slots wide)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eMust be completed by a licensed electrician. Mounts to standard 35mm DIN rail. Accepts single, 2-phase, or 3-phase wiring.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurther Details\u003c\/td\u003e\n\u003ctd\u003eReduction Revolution 3-Phase 100A kWh Sub Meter; RRSM03\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cimg alt=\"3-Phase Sub Meter Dimensions\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0150\/2930\/files\/RRSM03-dimensions-800px.jpg?v=1788327466\"\u003e\u003c\/p\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003eSub Meter Dimensions.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eHow will my electrician wire it up and is it easy to install?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe 3-Phase 4-Wire sub meter measures current directly as line cables pass straight through the meter's internal current sensors for each phase (L1, L2, L3). No external CT clamps are required.\u003c\/p\u003e\n\u003cp\u003eIt mounts directly onto standard 35mm DIN rail within distribution boards or enclosures that have at least 4 pole slots available (71.5mm width).\u003c\/p\u003e\n\u003cp\u003eThe device accepts up to 25mm² power cables through large screw-down terminals. It works on single-phase, 2-phase, or 3-phase installations (balanced or unbalanced). At a minimum, the meter requires line connection to L1 and Neutral to power up. The S01 and S02 terminals are optional pulse signal outputs.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0150\/2930\/files\/RRSM03-wiring-diagram-800px_480x480.jpg?v=1788328254\" alt=\"RRSM03 Wiring Diagram\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp style=\"text-align: center;\"\u003e\u003cem\u003eRRSM03 3-Phase Electricity Sub Meter Wiring Diagram.\u003c\/em\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eHow do I take electricity readings, and are they resettable?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eSub-meters count cumulative electricity use in kilowatt-hours (kWh). Much like a car's odometer, the reading starts from zero and increases with use.\u003c\/p\u003e\n\u003cp\u003eTo determine electricity use over a period, note the reading at the start and end (month, quarter, year, etc.). Subtract the start reading from the end reading for total kWh consumed.\u003c\/p\u003e\n\u003cp\u003eScreen 1 (T01) displays non-resettable total kWh. Screens 11 through 16 provide dedicated resettable logs for active and reactive energy tracking.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat if access is an issue to take readings?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eIn some cases, you may want to install sub-meters at both the main switchboard and directly inside the sub-board of a tenancy or secondary workshop. This ensures both owners and tenants have convenient, transparent access to their energy figures.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDoes it store data in a blackout or power outage?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. Cumulative energy values (kWh) are held in non-volatile memory and will remain preserved during power loss.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eIs the display backlit?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. It has a blue backlight that activates when you press the button, making it easy to read parameters in dimly lit distribution boards or equipment cupboards.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eIs it solar or battery compatible?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes. The sub meter is fully bidirectional, measuring energy consumed ('Forward Active Energy') as well as energy exported or generated by solar ('Reverse Active Energy'). It functions perfectly with or without solar installations.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat is a 'pulse output'?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis sub meter features two pulse outputs that flash\/trigger 1,000 times for every 1kWh measured. It includes an optical red LED on the front panel and a dedicated S0 wired pulse terminal for connection to third-party data loggers or Building Management Systems (BMS).\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eAre measurements from this meter enforceable?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThis sub-meter is not certified for customer billing in the same way that your main utility electricity meter is. It does, however, carry the same accuracy class, is relatively inexpensive, and suits most sub-metering applications.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDo you sell other sub meters?\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eYes, see our complete range of \u003ca href=\"\/collections\/electricity-sub-meters\" title=\"Sub Meters\"\u003eelectricity kWh sub meters\u003c\/a\u003e, including single-phase options.\u003c\/p\u003e","brand":"Reduction Revolution","offers":[{"title":"Default Title","offer_id":52780385206554,"sku":"RRSM03","price":149.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0150\/2930\/files\/RRSM03-main-render-RR.jpg?v=1788325495","url":"https:\/\/reductionrevolution.com.au\/products\/3-phase-sub-meter","provider":"Reduction Revolution","version":"1.0","type":"link"}