Toroidal 100VA Power Transformer 100V, 120V, 220V, 240V Primary Parallel 24V, Series 48V Secondary Parallel 4.16A, Series 2.08A Chassis Mount
Features
Electrical Rating: 100 VA
Nominal Primary Voltage: 100 V, 120 V, 220 V, or 240 V
Primary Frequency: 50 Hz / 60 Hz
Secondary Voltage (Series Connection): 48 V CT at 2.08 A
Secondary Voltage (Parallel Connection): 24 V at 4.16 A
Secondary Connection Type: Parallel or Series
Typical Regulation: 8.9 %
Typical Temperature Rise: 50 °C
Insulation Class: Class F, 155 °C
Dielectric Isolation (Primary to Secondary, 60 seconds): 4 kV
Connection Type: Leads
Outside Diameter: 96 mm
Maximum Height: 52 mm
Weight: 1.2 kg
Industry Standards: CE, cULus
Safety Rating: Medical
RoHS Compliant: Meets 2015/863/EU (RoHS 3) as of February 2016
Overview
The VPM48-2080 is a 100 VA toroidal power transformer in Triad's VPM Series, designed for medical safety applications. It accepts a nominal primary voltage of 100 V, 120 V, 220 V, or 240 V at 50/60 Hz, making it suitable for worldwide deployment. The dual secondary winding supports two output configurations: 48 V CT at 2.08 A in series, or 24 V at 4.16 A in parallel, providing flexible voltage and current delivery from a single unit. Typical voltage regulation is 8.9%, and typical temperature rise under load is 50 °C.
The toroidal core construction contributes to low leakage current and low stray fields - characteristics that are critical in medical equipment environments where electromagnetic interference and patient leakage current limits are tightly controlled. The 4 kV dielectric isolation (primary to secondary, held for 60 seconds) and Class F insulation rated at 155 °C support reliable long-term operation under demanding conditions. Compliance with CE and cULus standards makes this transformer appropriate for certified medical equipment targeting North American and European markets.
The transformer connects via leads and measures 96 mm in outside diameter with a maximum height of 52 mm, at a mass of 1.2 kg. Designers should confirm that the required secondary configuration - series or parallel - matches system requirements, verify that the intended primary voltage is among the four supported options, and ensure that the physical dimensions and lead termination are compatible with the enclosure and layout. Custom designs are available where standard configurations do not meet application requirements.
