Therm-O-Disc 15S1 309561 24 VAC Fan Control Sequencer Relay Style:Used The Square D QOB335 is

The Square D QOB335 is a 35 Amp 120/240 VAC 3 Pole Bolt-On Circuit Breaker designed to provide reliable overload and short circuit protection

it maintains compliance with electrical standards while providing durable

Guts-only configuration—interior components without exterior housing

gasket and screws are included and must be used with this box

it offers 20 amps of protection and can hold up to 250 volts

Therm-O-Disc 15S1 309561 24 VAC Fan Control Sequencer Relay Style:Used The Square D QOB335 isThe Therm O Disc 15S1 309561 is a 24 VAC fan control sequencer relay designed for HVAC systems. This relay manages fan operation timing and sequencing in heating and cooling applications, ensuring proper system coordination and efficiency. Built for reliable performance in commercial and residential installations, it provides precise control over fan motor activation. Ideal for technicians and contractors needing dependable climate control components.