Cincinnati, Ohio Foster Transformer now offers a wide capacity range of inherently limited Class 2 transformers with the introduction of its 100 VA model. The SURVIVOR transformers, with ratings from 40 VA to 100VA, eliminate the need for external protection or internal fusing due to their inherently limited classification.
SURVIVOR models are available with either 60 Hz or 50/60 Hz ratings. Primary input voltages include 115 V, 115/230 V, and 200/230 V with 24-V output. Each size/model includes UL Recognized Class 130 (B) insulation. IEC, EN and CE compliant designs are available. Alternate versions can be configured to meet specific customer requirements.
Each SURVIVOR model features patented short circuit and overload protection, which allows them to withstand a direct short circuit in excess of 15 days. For applications requiring less power, the Low Voltage Class 2 family includes 5 VA and 20 VA capacities. Suitable applications include medical instruments, HVAC and refrigeration, control panels, appliances, vending machines, battery chargers and other applications that require a Class 2 transformer.
The SURVIVOR line also extends the range of Class 2 transformers allowing them to be used in intermittent duty applications. Elimination of external fusing lowers the installed cost and total cost of ownership of the product since no servicing of this protection is required, said Foster Transformer. In addition, field-replaceable fuses also include risks that field personnel may bypass the protection or install a larger fuse thereby defeating the protection and creating a safety hazard, said the company.
Because they withstand overload conditions, SURVIVOR transformers can be sized for the average or continuous current load, which is said to be a less expensive option than specifying oversized transformers which are not "inherently limited" to handle in-rush at start-up or peak current draw. A single larger transformer can now replace multiple smaller transformers.
Pricing: Ranges from approximately $6.50 per 1,000 for the 40 VA models to $14.00 per 1000 for the 50/60 Hz, 100 VA models.
Availability: Delivery is from stock to eight weeks depending on model and quantity.
Product information: Standard transformers
Datasheet: SURVIVOR transfomers
Foster Transformer, 1-800-963-9799, www.foster-transformer.com