Inwood, N.Y. Signal Transformer, a subsidiary of Bel Fuse Inc., has expanded its M4L series of international power isolation transformers to include the 450 VA rated M4L-1-4, M4L-2-4, and M4L-3-4 devices that meet medical safety standards and low radio frequency interference (RFI) and electromagnetic interference (EMI) requirements.
These new transformers provide reinforced isolation between the mains supply and sensitive electronic equipment. They are in full compliance with the leakage and insulation requirements as stipulated by IEC 61558-1-2 and UL safety standard 60601-1.
The chassis mount devices feature a non-concentric winding platform to provide reinforced isolation and superior dielectric performance. The entire M4L transformer series is dielectric strength tested to 4.0 kV; offers an extremely low, less than 30 microamp, leakage current, and incorporates a UL Recognized class F (155°C) insulation system. Rated at 50/60 Hz, the series provides operational voltages of 115 V, 230 V and 100-115/200- 230 V.
These laminated transformers offer a vertical-mount configuration to minimize their footprint, and a modular "touch safe" terminal assembly to prevent shock hazards. They can be used in a variety of medical and dental instruments such as EEG monitors, electro-surgical equipment, hospital beds, portable lab cabinets, sterilizing equipment, medical grade linear power supplies, data processing isolation, and ultrasonic devices.
The power transformers feature quick-connect/screw-type terminals, and are constructed of low-loss magnetic steel and UL 94 V0 flame rated polymers. They measure 4.5 in. (114.3 mm) L x 4.33 in. (109.9 mm) W x 4.5 in. (114.3 mm) H, and weigh 11 lbs. (5.0 kg).
Pricing for the M4L series ranges from $59.50 to $62.45 each depending on operational voltage in quantities of 100. Delivery is from stock to six weeks.
Signal Transformer Inc., 1-866-239-5777, www.signaltransformer.com