{"product_id":"mars-mars-33232-heat-sequencer-3-switches-24v-control","title":"Mars mars-33232 Heat Sequencer 3 Switches 24V Control","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MARS mars-33232 is a heat sequencer designed for electric furnace and air handler applications that require staged heating element control. It features one DPST switch and one SPST switch across three switch positions, delivering two independent timing circuits. The main switch operates on a 1 to 24 second on-delay and a 45 to 75 second off-delay, with the auxiliary switch sharing the same timing range. Control voltage is 24 volts, and the sequencer is rated for 25 FLA at 240 volts. Licensed HVAC technicians handling electric resistance heating equipment are the primary installers of this component.\u003c\/p\u003e\n\u003cp\u003eThis sequencer is used in residential and light commercial electric forced-air heating systems where sequential staging of heating elements is required to prevent nuisance tripping of circuit breakers and reduce demand spikes at startup. It is commonly found in electric furnaces and heat strips inside air handlers. The two-timing configuration allows the installer to stagger element energization across the heating cycle, providing smooth, staged heat output during both the on and off sequences.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eOne DPST and one SPST switch configuration across 3 switch positions\u003c\/li\u003e\n  \u003cli\u003eTwo independent timing circuits for staged element control\u003c\/li\u003e\n  \u003cli\u003eMain and auxiliary switch on-time: 1 to 24 seconds\u003c\/li\u003e\n  \u003cli\u003eMain and auxiliary switch off-time: 45 to 75 seconds\u003c\/li\u003e\n  \u003cli\u003eRated 25 FLA at 240 volts for electric resistance heating loads\u003c\/li\u003e\n  \u003cli\u003e24-volt control circuit compatible with standard low-voltage thermostat wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eThe MARS mars-33232 references cross-reference number 51172-32 and is designed as an OEM-style replacement sequencer for electric furnaces and heat strip assemblies that require a 1 DPST and 1 SPST configuration with 24-volt control voltage.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eHeat sequencers are installed by licensed HVAC technicians. Disconnect and lock out all power to the unit before removing or installing a sequencer, as the heating element circuits carry 240-volt line voltage. Verify that the replacement sequencer matches the switch configuration, timing range, and FLA rating of the original before energizing the system. Inspect bimetal contacts and wiring terminals for corrosion or heat damage during the replacement procedure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitch Type\u003c\/strong\u003e: 1 DPST and 1 SPST\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Switches\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Timings\u003c\/strong\u003e: 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl Voltage\u003c\/strong\u003e: 24 volts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFLA at 240V\u003c\/strong\u003e: 25 amps\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMain Switch On-Time\u003c\/strong\u003e: 1 to 24 seconds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMain Switch Off-Time\u003c\/strong\u003e: 45 to 75 seconds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuxiliary Switch On-Time\u003c\/strong\u003e: 1 to 24 seconds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAuxiliary Switch Off-Time\u003c\/strong\u003e: 45 to 75 seconds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MARS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: mars-33232\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MARS","offers":[{"title":"Default Title","offer_id":51138541715762,"sku":"MARS-33232","price":160.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305532493.jpg?v=1778258911","url":"https:\/\/voomisupply.com\/products\/mars-mars-33232-heat-sequencer-3-switches-24v-control","provider":"Voomi Supply","version":"1.0","type":"link"}