This toxic gas sensor is cross-compatible with several legacy units

it provides the necessary amperage to drive contactors

Corrosion Resistance: Heavy-gauge material construction resists environmental degradation in outdoor environments

ensuring the evaporator coil maintains optimal thermal exchange across varying load conditions

Trane SWT1987 Switch 319848-301 This toxic gas sensor isFor high reliability operations, the Trane SWT1987 Switch is a critical mechanical interlock switch designed to prevent the simultaneous engagement of multiple power sources or contactors. This HVAC safety switch is engineered for heavy duty applications, specifically compatible with NEMA Size 4 contactors and starters. Built with a NEMA 4 enclosure, this unit provides superior protection against dust and moisture, making it an essential component for