Eaton SPM400230L4T SPD MAX surge protection device - UL 1449
Part Number: SPM400230L4T
Quick Summary
An Eaton SPD MAX SPM400230L4T surge protection device protects critical electrical systems from transient surges in industrial and commercial settings. Operators often struggle with unpredictable power spikes that threaten uptime, equipment life, and maintenance costs. UL 1449 listing and a rugged NEMA 4 enclosure provide reliable protection in harsh indoor environments and outdoor installations. With a 230 V single-phase rating and a 400 kA per phase capacity, this SPD delivers robust, fast-acting protection while simplifying panel integration. By reducing nuisance outages and safeguarding costly drives and controls, it supports longer asset life and lower total cost of ownership. This device fits into modern Power Xpert SPD ecosystems, aligning protection strategy with monitoring and preventive maintenance programs.
Product Information
Extended Description
SPM400230L4T Eaton: Eaton SPD Max series surge protection device, SPD Max Series, 400 kA per phase, 230 Single Phase, Power Xpert SPD, NEMA 4 with internal terminal block
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM400230L4T
UPC
786689410506
Product Length/Depth
9.5 in
Product Height
17.05 in
Product Width
15 in
Product Weight
52 lb
Certifications
UL 1449
Voltage rating
230 V
Surge current
400kA per phase
High-energy surge handling delivers measurable value by absorbing up to 400 kA per phase, protecting downstream loads from lightning and switching transients. This energy absorption limits voltage spikes that can destroy drives, PLCs, motor controllers, and sensors, reducing unplanned downtime. In manufacturing environments with heavy motor loads and irregular switching, the protection is a concrete ROI driver rather than a theoretical spec. 230 V single-phase operation aligns with common commercial and light-industrial feeders, simplifying selection and installation. The SPM400230L4T integrates into standard distribution panels without custom cabling, keeping wiring organized and compliant with enclosure fill limits. This straightforward integration reduces commissioning time and lowers labor costs during installation or retrofits. The NEMA 4 enclosure with an internal terminal block provides rugged, weather-resistant protection and safer, faster field connections. The internal terminal block minimizes wiring errors and improves reliability by keeping terminations contained and accessible from the rear or side. For outdoor or damp indoor locations, this design eliminates extra enclosures and reduces overall system footprint. UL 1449 listing confirms adherence to essential surge protection safety standards, supporting procurement compliance and risk management. This certification, combined with Eaton’s engineering support, provides confidence during audits and vendor reviews. When paired with proper upstream protection and coordination, the device contributes to a resilient power distribution scheme. With dimensions of 9.5 in depth, 17.05 in height, and 15 in width and a 52 lb mass, installers can plan mounting clearances, anchoring methods, and service access with precision. The compact yet sturdy profile suits tight electrical rooms, switchgear, or wall-mounted panels without sacrificing rigidity. Its robust construction also supports long service life in demanding environments. Designed to complement Eaton Power XpertSPD ecosystems, this unit supports proactive maintenance with accessible datasheets and integration points for monitoring. Availability of the Eaton specification sheet — linked in product downloads — aids engineering reviews and commissioning. For project teams, the combination of protection strength and install simplicity translates into lower lifecycle costs.
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FAQs
To install SPM400230L4T in a 230 V panel, plan for the 15 in width, 17.05 in height, and 9.5 in depth footprint and account for 52 lb weight. Use the internal terminal block to connect supply and protected circuits, and mount the unit within a NEMA 4 rated enclosure for outdoor or damp locations. Verify panel bus rating and spare terminal capacity to ensure proper wiring and code compliance.
400 kA per phase indicates the surge current the device can absorb for each line during fault and transient events. This rating helps protect sensitive equipment such as motor drives and PLCs by clamping transient voltages to safe levels, reducing voltage overshoot and potential damage. In practice, select a device with a higher per-phase rating than the largest anticipated surge in your facility's switching operations.
Yes. The SPM400230L4T uses a NEMA 4 enclosure that provides weather resistance and protection against dust and water ingress, enabling outdoor or harsh indoor installations. Ensure proper mounting, drainage, and clearances per Eaton guidelines, and coordinate with upstream protection and coordination studies. Confirm that all wiring remains accessible for routine inspection and maintenance.
UL 1449 listing confirms adherence to essential surge protection safety standards, supporting procurement and audit acceptance. The device is designed for 230 V single-phase service and offers an internal terminal block for safe, efficient wiring. While specific CE or IP ratings are not listed in the provided data, the NEMA 4 enclosure supports reliable operation in varied environments.
Maintenance is relatively minimal but should include periodic inspection of terminations and enclosure integrity, particularly after major surge events. The protection provided by the SPM400230L4T reduces unplanned downtime, extends asset life, and lowers replacement costs, delivering a favorable total cost of ownership, especially in facilities with frequent surges or critical loads.