Switchgear & Switchboard Apparatus
6 tracked issuers filing with the SEC under this industry classification.
Issuers
6
Filings
40
SIC Code
3613
Industry Overview
Switchgear & Switchboard Apparatus
Switchgear & Switchboard Apparatus makers under SIC 3613 provide medium- and low-voltage switchgear, switchboards, circuit breakers, protective relays, and intelligent control panels that route and protect power for utilities, industrial plants, data centers, transit systems, and fast-growing renewable and EV charging projects. Customers demand high reliability, compact footprints, and digital monitoring, driving 2024–2025 trends in smart switchgear with IoT sensors, arc-flash mitigation, solid-state designs, and SF6 phase-down alternatives to meet tightening environmental and safety standards. Major risks include supply chain exposure to copper and specialty resins, cybersecurity requirements for grid-connected devices, and strict compliance with OSHA, IEC/IEEE, UL, and utility interconnection rules; project delays and warranty liabilities remain profit swing factors. Rising grid modernization spend, AI-driven load management, and microgrid deployments are expanding retrofit and service opportunities, while price competition pressures margins. For the latest disclosures and order pipelines, view live SEC filings on Earnings Feed.
Source: Earnings Feed research · 11/23/2025
Latest Filings
- 10-KPOWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 10-K
Nov 19, 12:40 PM ET9.8 MB - 8-KPOWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 8-K
Nov 18, 4:28 PM ET319.0 KB - 4TII NETWORK TECHNOLOGIES, INC.
TII NETWORK TECHNOLOGIES, INC. 4
Oct 30, 7:58 PM ET13.0 KB - 10-QTII NETWORK TECHNOLOGIES, INC.
TII NETWORK TECHNOLOGIES, INC. 10-Q
Aug 14, 4:57 PM ET249.1 KB - 10-QTECHNOLOGY RESEARCH CORP
TECHNOLOGY RESEARCH CORP 10-Q
Aug 14, 2:05 PM ET470.4 KB - 4POWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 4
Jul 31, 5:59 PM ET8.8 KB - 8-KTECHNOLOGY RESEARCH CORP
TECHNOLOGY RESEARCH CORP 8-K
Jul 31, 8:53 AM ET90.5 KB - 6-KABB LTD$ABLZF
ABB LTD 6-K
May 4, 5:07 PM ET53.1 KB - 8-KLITTELFUSE INC /DE$LFUS
LITTELFUSE INC /DE 8-K
Mar 20, 4:26 PM ET4.6 KB - 4POWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 4
Jan 31, 2:34 PM ET35.8 KB - 10-KPOWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 10-K
Jan 17, 5:02 PM ET1.0 MB - SC 13G/ALITTELFUSE INC /DE$LFUS
LITTELFUSE INC /DE SC 13G/A
Jan 10, 3:37 PM ET10.5 KB - SC 13G/APOWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC SC 13G/A
Jan 10, 11:10 AM ET6.2 KB - 8-K/ATII NETWORK TECHNOLOGIES, INC.
TII NETWORK TECHNOLOGIES, INC. 8-K/A
Jan 4, 4:20 PM ET5.5 KB - 8-KTECHNOLOGY RESEARCH CORP
TECHNOLOGY RESEARCH CORP 8-K
Jan 3, 5:35 PM ET35.9 KB - 8-K/ATII NETWORK TECHNOLOGIES, INC.
TII NETWORK TECHNOLOGIES, INC. 8-K/A
Jan 3, 5:20 PM ET5.3 KB - 6-KABB LTD$ABLZF
ABB LTD 6-K
Oct 28, 5:07 PM ET1.2 MB - 8-KTII NETWORK TECHNOLOGIES, INC.
TII NETWORK TECHNOLOGIES, INC. 8-K
Oct 28, 4:02 PM ET46.4 KB - 4LITTELFUSE INC /DE$LFUS
LITTELFUSE INC /DE 4
Sep 6, 5:58 PM ET21.3 KB - 4LITTELFUSE INC /DE$LFUS
LITTELFUSE INC /DE 4
Sep 2, 11:09 AM ET17.7 KB - 6-KABB LTD$ABLZF
ABB LTD 6-K
Aug 23, 3:35 PM ET27.1 KB - 8-KLITTELFUSE INC /DE$LFUS
LITTELFUSE INC /DE 8-K
Aug 23, 12:36 PM ET8.1 KB - 8-KTECHNOLOGY RESEARCH CORP
TECHNOLOGY RESEARCH CORP 8-K
Aug 5, 5:45 PM ET190.8 KB - 6-KABB LTD$ABLZF
ABB LTD 6-K
Jul 28, 4:50 PM ET1.2 MB - 4TII NETWORK TECHNOLOGIES INC
TII NETWORK TECHNOLOGIES INC 4
Jul 25, 3:50 PM ET11.8 KB - 8-KTII NETWORK TECHNOLOGIES INC
TII NETWORK TECHNOLOGIES INC 8-K
Jul 13, 4:48 PM ET6.6 KB - 8-KLITTELFUSE INC /DE$LFUS
LITTELFUSE INC /DE 8-K
Jul 7, 6:57 PM ET9.3 KB - 8-KPOWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 8-K
Jul 6, 5:09 PM ET883.7 KB - 6-KABB LTD$ABLZF
ABB LTD 6-K
Jul 5, 2:40 PM ET43.4 KB - 4TECHNOLOGY RESEARCH CORP
TECHNOLOGY RESEARCH CORP 4
Jul 5, 1:20 PM ET3.4 KB - 8-KTECHNOLOGY RESEARCH CORP
TECHNOLOGY RESEARCH CORP 8-K
Jul 1, 4:50 PM ET19.2 KB - 6-KABB LTD$ABLZF
ABB LTD 6-K
Jun 30, 4:40 PM ET55.7 KB - 8-KTII NETWORK TECHNOLOGIES INC
TII NETWORK TECHNOLOGIES INC 8-K
Jun 24, 4:10 PM ET5.4 KB - 4TII NETWORK TECHNOLOGIES INC
TII NETWORK TECHNOLOGIES INC 4
Jun 9, 11:39 AM ET10.4 KB - 4TII NETWORK TECHNOLOGIES INC
TII NETWORK TECHNOLOGIES INC 4
Jun 9, 11:03 AM ET14.9 KB - 10-QPOWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 10-Q
Jun 8, 2:42 PM ET271.1 KB - 8-KTECHNOLOGY RESEARCH CORP
TECHNOLOGY RESEARCH CORP 8-K
Apr 26, 4:36 PM ET22.5 KB - 8-K/ALITTELFUSE INC /DE$LFUS
LITTELFUSE INC /DE 8-K/A
Apr 22, 5:21 PM ET90.1 KB - 6-KABB LTD$ABLZF
ABB LTD 6-K
Apr 22, 5:05 PM ET41.8 KB - 8-KPOWELL INDUSTRIES INC$POWL
POWELL INDUSTRIES INC 8-K
Apr 20, 11:06 AM ET10.8 KB
Featured Issuers
6Classification
- SIC Code
- 3613
- Total Issuers
- 6
- Recent Filings
- 40