{"product_id":"eurofase-universal-relay-control-box","title":"Eurofase Universal Relay Control Box | EFURCB24 Series","description":"\u003cdiv class=\"sc-commerce-structure\"\u003e\n\u003cp\u003e\u003cstrong\u003eEurofase EFURCB24 is the Canadian-made Universal Relay Control Box family for professionally engineered infrared-heating zones, proportional 0–10 V dimming and compatible external automation control.\u003c\/strong\u003e Choose 1 through 6 zones. Five- and six-zone units use larger manufacturer enclosures than the 1–4-zone models. These are \u003cstrong\u003e120–240 V heater-side control boxes\u003c\/strong\u003e; the separate EFURCB48 variants are for higher-voltage commercial applications and are not included in this listing.\u003c\/p\u003e\n\u003ch3\u003eExact orderable EFURCB24 variants\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eIndependent zones\u003c\/th\u003e\n\u003cth\u003ePublished maximum zone current\u003c\/th\u003e\n\u003cth\u003ePublished family maximum\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eEFURCB24M1\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEFURCB24M2\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e100 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEFURCB24M3\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e150 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEFURCB24M4\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e200 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEFURCB24M5\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEFURCB24M6\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003ctd\u003e300 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThese are manufacturer-published \u003cstrong\u003eequipment nameplate maximum ratings\u003c\/strong\u003e, not a recommendation to load a branch circuit or feeder to those figures. Determine circuit count, protection, continuous-load sizing, conductor sizing and simultaneous loads under the Canadian Electrical Code and the specific Eurofase diagrams.\u003c\/p\u003e\n\u003ch3\u003ePhysical and control specifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer family\u003c\/th\u003e\n\u003ctd\u003eEFURCB24, 1–6-zone Universal Relay Control Box (model-specific chassis)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eHeater supply family\u003c\/th\u003e\n\u003ctd\u003e120–240 V AC versions of the manufacturer EFURCB24 models\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e0–10 V control signal\u003c\/th\u003e\n\u003ctd\u003e0–10 V DC dimming input according to the manufacturer specification and 2026 installation manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeparate control-voltage reference\u003c\/th\u003e\n\u003ctd\u003e2026 manual also identifies 120 V AC control circuitry for EFURCB24; signal and power requirements must not be conflated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput-stage concept\u003c\/th\u003e\n\u003ctd\u003eSolid-state heater load control with manufacturer-described proportional adjustment\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting \/ enclosure\u003c\/th\u003e\n\u003ctd\u003eSurface-mounted, light-grey NEMA 4 equipment housing; ventilation around heat sinks is required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e1- and 2-zone dimensions\u003c\/th\u003e\n\u003ctd\u003eApproximately 16.25 in long × 16 in wide × 6 in deep, plus applicable heat-sink projections\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003e3- and 4-zone dimensions\u003c\/th\u003e\n\u003ctd\u003eApproximately 16.25 in long × 18 in wide × 6 in deep, plus heat-sink provisions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturing origin\u003c\/th\u003e\n\u003ctd\u003eCanada, per Eurofase series specifications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWarranty\u003c\/th\u003e\n\u003ctd\u003e3 years, subject to manufacturer conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\u003ch3\u003eWhen to select EFURCB rather than the EFCB contactor box\u003c\/h3\u003e\n\u003cp\u003eEFURCB is the manufacturer pathway for an engineered system requiring \u003cstrong\u003eproportional heater output\u003c\/strong\u003e, separate heat zones and properly specified external 0–10 V control. The \u003ca href=\"\/products\/eurofase-contactor-control-box\"\u003eEFCB24 contactor family\u003c\/a\u003e is the simpler \u003cstrong\u003eon\/off\u003c\/strong\u003e equipment family; its rated zone and controller architecture differ. An EFURCB zone is not merely an EFCB contactor operated by a wall dimmer.\u003c\/p\u003e\n\u003ch3\u003eLutron RadioRA 3 and third-party automation\u003c\/h3\u003e\n\u003cp\u003eEurofase illustrates the 0–10 V relay-box architecture for compatible external automation. Some professionally installed RadioRA 3 systems can provide a 0–10 V signal through an appropriate Lutron interface; however, \u003cstrong\u003ethat is a conceptual control path, not a verified drop-in wiring diagram\u003c\/strong\u003e. Confirm the Lutron module's signal characteristics, any required signal isolation\/switching, the EFURCB control input, emergency or manual disconnect and separate heater-load circuitry with both manufacturers and a qualified installer. A Lutron signal module must \u003cstrong\u003enot\u003c\/strong\u003e carry a heater's mains load.\u003c\/p\u003e\n\u003ch3\u003eCritical installation precautions\u003c\/h3\u003e\n\u003cp\u003eThe 2026 Eurofase manual requires a \u003cstrong\u003elicensed electrician\u003c\/strong\u003e, grounded and fixed equipment, a readily accessible disconnect in building wiring, correctly separated power and control-signal conductors, properly sized overcurrent protection, heat-tolerant vertical mounting and protection of all incoming cables. Control boxes generate heat during dimming: \u003cstrong\u003edo not block, cover or obstruct the heat sinks or fan ventilation\u003c\/strong\u003e, or enclose the equipment in an unventilated cavity. Verify the final indoor\/outdoor site against NEMA 4 limitations and local electrical rules. The manual warns that a failed switching device can remain energized; appropriate separate protective measures may be required.\u003c\/p\u003e\n\u003ch3\u003eSupported heater families and sizing\u003c\/h3\u003e\n\u003cp\u003eThe Eurofase EF40, EF50 and EF60 dual-element series appear in the manufacturer's example EFURCB wiring diagrams. A single \u003ca href=\"\/products\/eurofase-ef40-4000w-240v-dual-element-infrared-patio-heater\"\u003eEF40\u003c\/a\u003e represents approximately 16.7 A at 240 V, while a single \u003ca href=\"\/products\/eurofase-ef60-6000w-240v-patio-heater\"\u003eEF60\u003c\/a\u003e is 25 A at 240 V. Zone capacity, heater count and dimming behaviour are determined by the exact approved control-box connections and branch circuits; do not assume that the maximum 50 A zone rating permits two arbitrary heaters without verifying the manufacturer drawing and electrical code.\u003c\/p\u003e\n\u003ch3\u003eWhat is included and excluded\u003c\/h3\u003e\n\u003cp\u003eThe EFURCB installation guide illustrates one control box, the manufacturer's instruction book, a wiring diagram and a safety sheet. Heaters, third-party automation interfaces, dimmer\/timer switches, upstream disconnects, independent high-temperature connection whips and site wiring are \u003cstrong\u003enot automatically included\u003c\/strong\u003e. For eligible control-box connections see the \u003ca href=\"\/products\/eurofase-c-series-high-temperature-control-box-whip\"\u003eEurofase EFHTW C-Series high-temperature whip family\u003c\/a\u003e, with exact conductor requirements verified for each arrangement.\u003c\/p\u003e\n\u003ch3\u003eOfficial Eurofase technical documentation\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/eurofaseheating.com\/wp-content\/uploads\/2025\/07\/EH-Spec-Sheet-Control-Box1-4-Zone_06162025.pdf\" target=\"_blank\" rel=\"noopener\"\u003eEFURCB 1–4-zone manufacturer specification (PDF)\u003c\/a\u003e — exact M1–M4 rating and dimensions\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/eurofaseheating.com\/wp-content\/uploads\/2026\/07\/EH-Control-Box-Installation-Manual-Updated_07162026.pdf\" target=\"_blank\" rel=\"noopener\"\u003e2026 Universal Relay Control Box installation and wiring manual (PDF)\u003c\/a\u003e — wiring diagrams, protections and heat-sink clearance\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/eurofase.com\/product\/control-box\/\" target=\"_blank\" rel=\"noopener\"\u003eEurofase control-box manufacturer family\u003c\/a\u003e — available model variants and official resources\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eCommon dealer questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs EFURCB24M4 four heaters?\u003c\/strong\u003e No. M4 denotes four independent zones; the number of heaters permitted per zone requires a model-specific load and wiring design.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the 0–10 V signal switch mains power?\u003c\/strong\u003e No. The control signal is a separate interface; follow Eurofase's wiring and the approved disconnect\/isolation plan.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan an installer simply connect an RA3 0–10 V module?\u003c\/strong\u003e Not without confirming the exact Eurofase input, external signal device and all electrical conditions.\u003c\/p\u003e\n\u003cp\u003eFinal price, supplier availability, equipment sizing and delivery freight must be confirmed before order.\u003c\/p\u003e\n\u003csection class=\"sc-eurofase-multizone\" data-sc-eurofase=\"5-6-zone-extension-v1\"\u003e\u003ch3\u003e5- and 6-zone control-box specifications\u003c\/h3\u003e\n\u003cp\u003eEurofase EFURCB24M5 and EFURCB24M6 are large-project 120–240 V control models. The 2025 manufacturer's 5\/6-zone sheet lists a 0–10 V DC proportional control input, 50 A maximum per zone, 250 A and 300 A aggregate nameplate maximums, and surface-mounted NEMA 4 enclosures approximately 22 × 24 × 6 in. The six-zone model has heat sinks on both sides. These maximums do not establish approved continuous branch-circuit loading, connected heater quantity, feeder design, or compatibility for a particular project.\u003c\/p\u003e\n\u003cp\u003eBoth variants are special-order project controls: confirm current manufacturing availability, complete installation diagrams, electrical service and zone allocations before release. Do not presume either variant is included in any Eurofase two-heater bundle.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/eurofaseheating.com\/wp-content\/uploads\/2025\/07\/EH-Spec-Sheet-Control-Box-5-and-6-Zone_06162025.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEurofase official EFURCB 5- and 6-zone specification (PDF)\u003c\/a\u003e · \u003ca href=\"https:\/\/eurofaseheating.com\/wp-content\/uploads\/2026\/07\/EH-Control-Box-Installation-Manual-Updated_07162026.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e2026 wiring and installation manual (PDF)\u003c\/a\u003e\u003c\/p\u003e\u003c\/section\u003e\n\u003csection data-sc-integrations=\"eurofase-lutron-2026\"\u003e\u003ch3\u003eRadioRA 2 \/ RadioRA 3 project control pathway\u003c\/h3\u003e\n\u003cp\u003eThe \u003ca href=\"\/products\/lutron-lmj-5t-dv-b\"\u003eLutron LMJ-5T-DV-B 0–10 V RF dimming module\u003c\/a\u003e is specifically shown with a Eurofase Universal Relay Control Box in Eurofase's 2024 RadioRA 2 integration guide. Lutron confirms this module is also supported in RadioRA 3, so it is a priority companion component for \u003ca href=\"\/products\/lutron-rr-proc3-kit\"\u003eRadioRA 3\u003c\/a\u003e projects. \u003cstrong\u003eThe complete Eurofase\/RadioRA 3 system is not independently certified by those two documents.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Lutron module provides the \u003cstrong\u003econtrol signal only\u003c\/strong\u003e; the EFURCB switches or controls the separately protected heater circuits. Do not connect a heater's 240 V mains load directly to the Lutron LMJ, which has a 5 A lighting switching rating. Confirm manufacturer wiring, source\/sink compatibility, shutoff and safety requirements, visibility and local electrical code before commissioning. This is not a pre-engineered kit.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/assets.lutron.com\/a\/documents\/rf_dimming_module_with_0-10_spec.pdf\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eLutron LMJ specification\u003c\/a\u003e | \u003ca href=\"https:\/\/support.lutron.com\/us\/en\/product\/radiora3\/article\/system-design-setup\/Integrating-Outdoor-Heaters-with-Lutron-Residential-Systems\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eLutron outdoor heater design and safety guidance\u003c\/a\u003e | \u003ca href=\"https:\/\/eurofaseheating.com\/download\/\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEurofase technical document library\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\n\u003csection data-sc-eurofase=\"dealer-attach-20261027\"\u003e\u003ch3\u003eComplete the control system\u003c\/h3\u003e\n\u003cp\u003eEurofase \u003ca href=\"\/products\/eurofase-efswtd-timer-0-10v-dimmer-controls-for-universal-relay-boxes\"\u003eEFSWTD1–4 timer\/dimmer wall controls\u003c\/a\u003e supply one countdown timer plus 1–4 wall dimmer controls, and the \u003ca href=\"\/products\/eurofase-efswt-15-minute-to-4-hour-countdown-heater-control-timer\"\u003eEFSWT countdown timer\u003c\/a\u003e is also available for an appropriate control-box circuit. \u003cstrong\u003eThe wall controls are not included with the EFURCB.\u003c\/strong\u003e Choose the M1–M6 relay box by engineered zones, not automatically by heater count. Use Lutron 0–10V integration as a distinct control-signal design path; do not assume both Eurofase manual dimming and Lutron modules are required in the same project.\u003c\/p\u003e\n\u003cp\u003eAll control strategies require Eurofase wiring review, electrician approval and an appropriate safe shutoff.\u003c\/p\u003e\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Eurofase","offers":[{"title":"1 Zone","offer_id":50486086533311,"sku":"EFURCB24M1","price":1571.99,"currency_code":"CAD","in_stock":true},{"title":"2 Zones","offer_id":50486086566079,"sku":"EFURCB24M2","price":2149.99,"currency_code":"CAD","in_stock":true},{"title":"3 Zones","offer_id":50486086598847,"sku":"EFURCB24M3","price":3207.99,"currency_code":"CAD","in_stock":true},{"title":"4 Zones","offer_id":50486086631615,"sku":"EFURCB24M4","price":3785.99,"currency_code":"CAD","in_stock":true},{"title":"5 Zones","offer_id":67779563290815,"sku":"EFURCB24M5","price":5084.99,"currency_code":"CAD","in_stock":true},{"title":"6 Zones","offer_id":67779563323583,"sku":"EFURCB24M6","price":5668.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0410\/6262\/9541\/files\/EH-IMG-Control-Box-Z1_10092025-850x850.jpg?v=1790187800","url":"https:\/\/www.simplycontrolled.ca\/products\/eurofase-universal-relay-control-box","provider":"Simply Controlled","version":"1.0","type":"link"}