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Switchgear & Switchboard Apparatus SIC 3613
2 companies filing with the SEC under SIC 3613. Median revenue growth +15% year on year in Q2 2026 (2 companies). The growth model expects the industry's combined revenue to grow +20% in Q3 2026. 1 customer or supplier links named in annual reports.
Money flow: where the industry's revenue goes
Drawn in the browser: an estimate of where the industry's revenue goes — what it buys from other industries, the pay that reaches households, taxes and profit — beside its filed cash flow, two tiers of suppliers and its capital spending by kind of asset.
Open the industry: growth distribution, money flow, network →
Who sells to whom
Customers and suppliers named in the companies' annual reports; the share is of the supplier's revenue.
- LFUS → ARW 10% of the supplier's revenue, $227M
Growth model
Industry revenue, the same companies year on year; 80% ranges. Fitted on SEC filings and tested out of sample (how).
| Quarter | Growth Y/Y | Revenue | 80% range |
|---|---|---|---|
| Q3 2026 | +20.3% | $1.1B | $1.0B – $1.2B |
| Q4 2026 | +21.4% | $1.0B | $909M – $1.1B |
| Q1 2027 | +20.9% | $1.2B | $1.0B – $1.3B |
| Q2 2027 | +19.7% | $1.3B | $1.1B – $1.4B |
Capital spending and supply chain →
Companies
| Company | Quarterly revenue | Y/Y | Stage |
|---|---|---|---|
| LFUS Littelfuse | $767M | +20% | expansion |
| POWL Powell Industries | $312M | +9% | mature |
Growth from positive, comparable quarterly revenue as filed; industries are SEC Standard Industrial Classification codes. Data Nov 8, 2026.