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1. Introduction
Tripp Lite’s S3MT-30KWR480V and S3MT-60KWR480V are 480V wrap-around models that include two transformers in one
enclosure: a 480V (Delta) to 208V (Wye) input isolation step-down transformer and a 208V (Wye) to 480V (Wye) output auto
step-up transformer.
The input isolation transformer mitigates utility line surges and spikes, while protecting the UPS. The output auto transformer
is designed to support 480V (Wye) IT loads. These models have built-in circuit breakers to prevent dangerous circuit overloads.
Four ball-bearing fans for S3MT-30KWR480V and eight ball-bearing fans for S3MT-60KWR480V maintain quiet operation
and help to dissipate transformer heat. An overheat-sensing relay and thermal switch, combined with an LED light in the front
panel, provide over-temperature warning and overheating protection. The UPS system’s small footprint and quiet acoustic
profile enable installations with minimal space and noise impact. All transformer models feature stainless steel housings with
front panels similar to the S3M-Series 208V 3-Phase UPS line.
UPS Model Series Number Capacity Description
S3MT-30KWR480V
(Not compatible with
SUT20K or SUT30K UPS)
AG-0511 30kW
Input Transformer: 480V to 208V Isolation
Step-Down Transformer
Output Transformer: 208V to 480V Auto
Step-Up Transformer
S3MT-60KWR480V
(Not compatible with
SUT40K or SUT60K UPS)
AG-0512 60kW
Input Transformer: 480V to 208V Isolation
Step-Down Transformer
Output Transformer: 208V to 480V Auto
Step-Up Transformer
Typical applications
4-Wire (3Ph+N+PE) IT equipment loads in government, manufacturing, hospitals, industrial settings and corporate settings
that have 480V electrical mains and 480V IT loads.
Key Features
• The input step-down transformer provides 480V (Delta) to 208V/120V (Wye) isolation protection to the UPS input
• The output auto transformer provides 208V (Wye) to 480V (Wye) step-up to support 480V IT loads
• Circuit Breakers at the output of the input transformer and the input of the output transformer
• Overheating warning and protection
• 95.2% to 97.5% efficiency
• Wide input voltage and frequency operating range: Voltage: -20% to +25% @ 100% load and 40-70 Hz
• Insulation class: 180°C material
• Reliability-tested according to ISTA-3B for vibration, shock, drop (tip test)
• UL and CSA TUV certifications
• Rugged stainless steel housing shipped ready for installation
• 2-year warranty
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