Eaton SPM250240H4T Surge Protection Device - UL 1449
Part Number: SPM250240H4T
Quick Summary
SPM250240H4T surge protection device protects electrical panels from transient surges in 240V high-leg delta systems. Engineers often battle unexpected outages and equipment damage caused by voltage spikes, especially in demanding industrial environments. UL 1449 listing ensures electrical safety performance while the chassis is a NEMA 4 enclosure built for wet and dirty settings. Together with Power Xpert SPD compatibility, it supports scalable protection with minimal wiring, cutting installation time and total cost. This combination delivers reliability, compliance, and predictable maintenance for critical loads in manufacturing, energy, and data-center environments. Designed for retrofit ease and serviceability, it minimizes downtime during upgrades.
Product Information
Extended Description
SPM250240H4T Eaton: Eaton SPD Max series surge protection device, SPD Max Series, 250 kA per phase, 240 Delta High Leg (4W + G) on 'B' Phase, Power Xpert SPD, NEMA 4 with internal terminal block
Product Name
Eaton SPD MAX series surge protection device
Catalog Number
SPM250240H4T
UPC
786689408244
Product Length/Depth
9.5 in
Product Height
17.05 in
Product Width
15 in
Product Weight
52 lb
Certifications
UL 1449
Voltage rating
240V high-leg delta (4W+G) on B phase
Surge current
250kA per phase
Feature → Business Impact → Application: High surge current rating of 250 kA per phase provides robust transient suppression, directly reducing equipment damage and unplanned downtime. This translates to measurable uptime gains and lower repair costs in mission-critical electrical rooms. Application: manufacturing lines and motor-control centers where high-energy transients are common. Feature → Business Impact → Application: 240V high-leg delta (4W + G) on the B phase ensures compatibility with legacy motor starters and Delta-wye distribution schemes, enabling straightforward retrofit and minimal rewiring. Application: plants upgrading protection without rearranging feeders. Feature → Business Impact → Application: NEMA 4 enclosure with internal terminal block simplifies installation and maintenance in wet, dusty, or outdoor environments, consolidating wiring and improving field service speed. Application: outdoor substations, outdoor-rated kiosks, and harsh factory floors. Feature → Business Impact → Application: UL 1449 certification provides safety and performance assurance, simplifying audits and commissioning. Application: design-build projects for critical infrastructure. Feature → Business Impact → Application: Clear footprint with dimensions (9.5 in depth x 15 in width x 17.05 in height) and 52 lb weight support planning, rack compatibility, and secure mounting. Application: panel schedules, UPS rooms, electrical racks. Feature → Business Impact → Application: Power Xpert SPD compatibility and internal terminal block enable scalable protection within Eaton protection ecosystems. Application: modular protection strategies for growing facilities.
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FAQs
Install the SPM250240H4T using the internal terminal block for direct connections to all three phases plus the ground. Follow the included wiring diagram and torque specs, ensuring proper clearance and seal integrity for the NEMA 4 enclosure. After wiring, verify UL 1449 compliance and perform a commissioning test to confirm proper surge suppression performance.
The device delivers 250 kA per phase of surge current rating, enabling it to absorb large transient spikes without compromising connected equipment. This capability reduces the likelihood of insulation damage, motor faults, and control circuit trips, delivering measurable uptime improvements and extending the life of drives, PLCs, and switchgear in volatile electrical environments.
Yes. The unit is housed in a NEMA 4 enclosure with an internal terminal block, designed for wet, dusty, and outdoor conditions. Proper gasket integrity and enclosure mounting preserve protection ratings, making it suitable for outdoor cabinets, substations, and exposed factory floors where environmental exposure is routine.
The SPM250240H4T carries UL 1449 listing for surge protection devices, ensuring compliance with recognized safety and performance standards. This certification simplifies regulatory audits and supports integration into Eaton Power Xpert SPD ecosystems, helping to streamline project approvals and commissioning.
Plan for a footprint of 9.5 in depth, 15 in width, and 17.05 in height, with a 52 lb weight. Allow adequate service clearance and mount using the internal terminal block for clean wiring. Understanding these dimensions aids in precise panel scheduling, rack layout, and quick commissioning in electrical rooms and protected enclosures.