At Portlandia Electric Supply, our Automatic Transfer Switches & Accessories collection ensures reliable, automatic power transfer for homes, businesses, and mission-critical systems. Featuring trusted brands like Generac, Cummins, and Champion, these switches protect essential equipment and reduce downtime by automating source changeovers during outages.
Premium Switches for Every Power Need
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Cummins RA 100 Amp NSE 240 V 1-Phase (A064G345)
Compact and affordable, this switch handles up to 100 A and is ideal for small to mid-sized residential or light commercial standby setups.
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Cummins RA 150 Amp SE 240 V 1-Phase (A066V485)
Stepped up capacity for larger homes or business backup systems requiring up to 150 A reliability.
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Cummins RSS200 200 Amp NSE 240 V 1-Phase (A065M393)
Built for heavy-duty standby applications, this 200 A switch supports larger service panels and more power-hungry systems.
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Cummins OTEC 400 Amp NSE 208 V 3-Phase (A075F130)
Designed for industrial or large-scale commercial environments, this switch delivers robust 400 A, 3-phase switching for high-load continuity.
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Champion Automatic Transfer Switch – 50 Amp, 10-Circuit, NEMA 3R (Model 100950)
Ideal for small generators or load banking, this compact NEMA 3R unit covers up to 10 circuits for selective coverage.
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Champion aXis 150 A SE Whole-House ATS (Model 102008)
A reliable whole-home solution for residential backup, rated at 150 A and built into a durable NEMA 3R enclosure.
Why Choose This Collection?
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Trusted Brands & High Availability
Featuring Generac, Cummins, and Champion—top names in power backup and ATS systems.
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Wide Power Range & Enclosure Ratings
From 50 A to 400 A and service specs from single-phase to 3-phase, plus weather-protected NEMA enclosures.
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Mission-Critical Reliability
Automatic switching preserves uptime, ideal for healthcare, data centers, commercial spaces, and residential living.
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Installer-Friendly Stock & Support
In-stock options, fast delivery, pallet deals, and expert B2B support from Portlandia Electric Supply.
Quick Comparison
| Switch Model |
Capacity |
Phase |
Best For |
| Cummins RA 100 A NSE |
100 A |
1-Phase |
Small home/commercial backup |
| Cummins RA 150 A SE |
150 A |
1-Phase |
Larger residential systems |
| Cummins RSS200 200 A NSE |
200 A |
1-Phase |
Medium commercial loads |
| Cummins OTEC 400 A 3-Phase |
400 A |
3-Phase |
Industrial or large-scale systems |
| Champion 50 A, 10-Circuit NEMA 3R |
50 A |
N/A |
Circuit-specific small backup |
| Champion aXis 150 A Whole-House |
150 A |
N/A |
Full residential backup |
Upgrade your backup strategy with seamless, automatic power transfers—shop the Automatic Transfer Switches & Accessories collection at Portlandia Electric Supply today and keep your power resilient and reliable.
