SPAN
Smart Panel MAIN 40
Replaces the main panel. Every circuit metered and controlled from the SPAN Home App.

At a glance
Key specs
- Controllable circuits
- 40
- Busbar rating
- 225 A
- Main breaker
- 100 to 200 A, service-entrance rated
- Microgrid Interconnection Device
- Built-in MID
- Dimensions
- 46.0 × 14.3 × 6.5 in
- Weight
- 109 lb (49.5 kg)
- Enclosure
- NEMA 3R (indoor or outdoor)
- Operating range
- -22°F to 122°F, 0 to 100% humidity
- Metering accuracy
- Revenue-grade ±0.5% per circuit
- Connectivity
- Ethernet, Wi-Fi (2.4 / 5 GHz), cellular LTE
Warranty
10 years
- 10-year limited warranty on the panel (effective March 1, 2025)
- Requires commissioning by a SPAN Authorized Installer for full term
- Transfers to subsequent owners at the original installation address
- Home Gateway accessory: 5-year warranty
Certifications
Tested and approved
UL 67 (Panelboards)UL 869A (Service Equipment)UL 916 (Energy Management)UL 3141 (Power Control Systems, first-in-class)FCC Part 15 Class BNEC Article 750 EMS-compliant
Resources
Datasheets & downloads
◼DatasheetSPAN MAIN 40 DatasheetPDF · 1.0 MB◼DatasheetSPAN MLO 48 Datasheet (sub-panel companion)PDF · 964 KB◼DatasheetSPAN MLO 24 Datasheet (small-home variant)PDF · 1.2 MB◼DatasheetSPAN MAIN 32 Datasheet (GEN2 legacy)PDF · 2.7 MB◆WarrantySPAN Panel Limited WarrantyWeb↗Product pageSPAN Panel product pageWeb↗Product pageSPAN + Powerwall 3 Integration GuideWeb
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