Robertshaw 620-406 Transformer or visible bulging on the

or visible bulging on the capacitor casing

This component is fully compatible with professional-grade models

Universal Honeywell Compatibility: Optimized for use with Honeywell 392449-1 specifications

The adjustable radius mechanism allows for a stroke length ranging from 1 inch to 2 3/4 inches

the MARS 11953 is the likely solution

Robertshaw 620-406 Transformer or visible bulging on theThe Robertshaw 620 406 is a heavy duty 208 240V to 24V HVAC transformer engineered for reliable step down power in demanding light commercial and residential control circuits. Rated at 40VA, this open frame transformer provides the stable secondary voltage output required to drive contactors, relays, and circuit boards without voltage sag. The foot mount design ensures a secure installation within furnace cabinets or air handler control boxes, making