APC by Schneider Electric AP4422A 230V 16A 1U Rack Automatic Transfer Switch
Overview
The AP4422A is a 1U rack-mounted Automatic Transfer Switch (ATS) designed for 230V European and international data center environments where a single power path is an unacceptable risk. It accepts two independent IEC 60309 16A 2P+E sources and presents a single IEC 60309 16A 2P+E output — so if your primary feed drops, the unit transfers load to the secondary source without interrupting connected equipment. That's the core value proposition: you get redundant power pathing for rack PDUs, servers, or network gear without redeploying infrastructure or adding UPS units to every device. Browse the full APC by Schneider Electric catalog for complementary power protection products.
At 3,840 VA load capacity and a 16A rated line current, the AP4422A covers a fully loaded 1U–2U server or a high-density switch without headroom concerns. The form factor is horizontal rack-mount, occupying one rack unit — a practical fit for data center racks where vertical space is rationed. If you're evaluating rack automatic transfer switches, the AP4422A targets scenarios where two discrete utility feeds, generator-backed circuits, or dual-corded UPS outputs are available and need to be combined behind a single-corded load.
Key Features
- Dual IEC 60309 Input, Single IEC 60309 Output: Two independent 16A 2P+E inputs funnel into one output connector. This means you can wire the ATS to two separate PDUs or breaker panels and achieve true A/B feed redundancy without touching the downstream device. Critical for single-corded servers that can't natively accept dual feeds.
- 3,840 VA Load Capacity at 16A / 230V: Sized for a full rack row of 1U equipment or a single high-draw server. Running at 3,840 VA means you're not forced to derate for realistic loads — budget the full circuit rather than hunting for headroom.
- Acceptable Input Voltage Range 207–253V: A ±10% tolerance around 230V nominal means the ATS won't nuisance-transfer on normal utility sags. Tighter-tolerance sites with clean feeds won't see unnecessary switchovers; sites with marginal power quality get a buffer before the ATS acts.
- 1U Horizontal Rack Mount: At 17.01 in wide and only 1.73 in tall, the AP4422A drops into any standard 19-inch rack without adapter kits. Horizontal mounting keeps cable dress predictable. Weight is 9.28 lb — light enough for a single technician to rack without assistance.
- 8 ft (2.4 m) Input Cables: The input cord length gives meaningful routing flexibility inside a rack or between adjacent cabinets. Pairing this with the 2.99 ft (0.91 m) output cord keeps the downstream device connection short and tidy — less cable management overhead in dense environments.
- Operating Temperature Range –5°C to 45°C (23°F to 113°F): Covers the full ASHRAE A2 envelope for data center ambient, meaning the ATS won't throttle or alarm in elevated-temperature free-cooling scenarios where rack intakes may see 35–40°C in summer. Check your specific rack inlet temps if you're running at the high end.
- CE Certification, EN/IEC 60950-1 and UL 60950-1 Compliance: CE marking confirms the unit meets European safety and EMC requirements. The dual 60950-1 listing (both EN and UL variants) broadens acceptance in mixed-jurisdiction procurement — useful when purchasing for a multi-region rollout where one SKU needs to satisfy both EU and North American safety reviewers.
- EU RoHS and REACh Compliant: Relevant if your procurement team requires environmental compliance documentation for import, disposal, or ESG reporting. Both declarations are supported by APC, reducing paperwork for regulated industries.
- 50/60 Hz Input Frequency: Accepts both 50 Hz (standard European grid) and 60 Hz (available in some industrial/generator scenarios). No frequency matching required when pairing feeds from mixed sources.
Integration & Compatibility
The AP4422A is wired inline between your power sources and your rack PDU or direct-connected load. It requires two independent IEC 60309 16A 2P+E source circuits — typically from two separate rack PDUs or branch circuits on separate utility feeds or UPS outputs. The single IEC 60309 16A 2P+E output then feeds your downstream distribution point. Because the ATS is transparent to the load during normal operation and transfers automatically on source failure, no software configuration is required for basic operation. The unit is passive in normal state — there's no management interface described in the available specifications, so monitoring of transfer events would need to happen at the upstream UPS or PDU layer. For environments that require event logging or SNMP visibility of power path status, pair this with managed UPS systems that report feed availability upstream of the ATS inputs.
Operating altitude up to 10,000 ft (and storage up to 15,240 m) makes the AP4422A deployable at high-altitude facilities — edge sites, mountain data centers, or aerospace-adjacent installations — without derating concerns within that envelope.
Frequently Asked Questions
Q: What input connector type does the AP4422A use?
A: The AP4422A uses IEC 60309 16A 2P+E connectors for both inputs. Two independent source feeds connect via these industrial-standard connectors. The output is also IEC 60309 16A 2P+E.
Q: What is the maximum load the AP4422A can support?
A: The AP4422A is rated at 3,840 VA at 230V with a 16A maximum line current. Size your connected load to stay within these limits — do not exceed 16A on the output circuit.
Q: Does the AP4422A work on both 50 Hz and 60 Hz power?
A: Yes. The AP4422A accepts 50 Hz and 60 Hz input frequencies, making it compatible with standard European grid power (50 Hz) and certain industrial or generator sources running at 60 Hz.
Q: What is the warranty on the AP4422A?
A: The AP4422A carries a 2-year manufacturer warranty.
Q: What certifications does the AP4422A hold?
A: The AP4422A is CE certified and complies with EN/IEC 60950-1 and UL 60950-1 safety standards. It is also EU RoHS compliant and covered by a REACh declaration.
Q: What rack space does the AP4422A require?
A: The AP4422A is a 1U horizontal rack-mount unit measuring 1.73 in (4.4 cm) H × 17.01 in (43.2 cm) W × 9.29 in (23.6 cm) D. It fits any standard 19-inch rack in one rack unit.
The AP4422A is the unit I reach for when a client has a single-corded PDU or server that needs to sit behind two discrete 230V feeds without a full infrastructure redesign. The 3,840 VA / 16A capacity covers most 1U–2U compute loads without derating, and the IEC 60309 2P+E connector spec means you're working with industrial locking connectors — not the kind of plug that pulls loose under vibration or cable tension in a busy rack.
Technical Highlights:
- 207–253V Input Tolerance: The ±10% acceptance window around 230V nominal prevents nuisance transfers on normal utility sags — you won't see the ATS bouncing between feeds every time the building HVAC kicks in on a marginal circuit.
- 1U Horizontal Form Factor (17.01 × 1.73 × 9.29 in, 9.28 lb): Fits standard 19-inch racks without adapter hardware, and at under 10 lb it's a solo-tech install. Horizontal orientation keeps cable dress straightforward compared to vertical ATS units.
- 50/60 Hz Dual-Frequency Input: Useful in mixed-source scenarios — for example, pairing a 50 Hz utility feed with a 60 Hz generator-backed circuit. The ATS accepts both without configuration.
Deployment Considerations:
- The AP4422A has no described management interface in the available specifications — plan to monitor power path health at the upstream UPS or managed PDU layer rather than at the ATS itself. If SNMP-level transfer event logging is a requirement, that visibility needs to come from upstream devices.
- The output cord is 2.99 ft (0.91 m) — short by design for direct rack PDU connections, but verify the downstream device's inlet is within reach before finalizing rack position. The 8 ft (2.4 m) input cables give you more flexibility on the source side.
Best fit for European or international colocation environments running dual utility feeds or dual UPS outputs where a single-corded rack PDU or server needs A/B redundancy consolidated into one feed — without adding a second power supply to every device in the rack.
