HONEYWELL PRESSURE OPERATED SWITCH 4L30

HONEYWELL PRESSURE OPERATED SWITCH 4L30 A.2003-89769 FM APPROVED PMAX=8.5 PSI (600 MBAR) U=240 VAC /=5(0,5) AMP PLL AT LAMP 120 VAC. THE HONEYWELL KROMSCHRODER DG50T-21N (PART NUMBER: 84447820 / KS84447820) IS AN AUTOMATIC-RESET GAS AND AIR PRESSURE SWITCH DESIGNED TO MONITOR POSITIVE NEGATIVE OR DIFFERENTIAL PRESSURE. IT TRIGGERS ELECTRICAL CONTACT TRANSITIONS WHEN ITS ADJUSTABLE SETPOINT IS REACHED TO MANAGE BURNER SAFETY AND COMBUSTION CIRCUITS. CORE TECHNICAL SPECIFICATIONS: PART NUMBER: KS84447820 (OR 84447820) ADJUSTABLE RANGE: 1" TO 20" WATER COLUMN (WC) / 2.5 TO 50 MBAR. RESET TYPE: AUTOMATIC (SWITCHES DYNAMICALLY WITH FALLING AND RISING PRESSURE). ELECTRICAL FEEDBACK: BLUE PILOT LAMP/LED RATED FOR 120 V AC. PROCESS CONNECTIONS: ONE 1/4" NPT CONNECTION (NOTE: THE SIMILAR -22N VERSION FEATURES TWO 1/4" NPT CONNECTIONS). ELECTRICAL INTERFACE: SCREW TERMINALS WITH A 1/2" NPT CONDUIT CONNECTION. SAFETY & APPROVALS: UL LISTED FM APPROVED CE AND EAC CERTIFIED. KEY FEATURES & DESIGN: ADJUSTABLE DIAL: SETPOINTS ARE ADJUSTED MANUALLY USING AN INTEGRATED HAND WHEEL SCALED IN "WC AND MBAR. VENT LIMITER: INCLUDES AN INTEGRATED FLOW-LIMITING NOZZLE TO COMPLY WITH UL/FM INSTALLATION SAFETY REGULATIONS. ISOLATION BARRIER: ELECTRICAL COMPONENTS ARE ISOLATED FROM THE DIAPHRAGM SIDE SAFEGUARDING THE WIRING ENVIRONMENT.