Finder impulse switch for DIN rail 20.21.9.024.4000. Manufacturer: Finder. Name: Impulse switch for DIN rail 1S 20A 24VDC. Type: 20.21.9.024.4000. Function: Mechanical switch. Mounting type: DIN rail. Width in units of pitch: 1. Installation depth: 58.4 mm. Number of contacts as normally open: 1. Control voltage 1: 24 V. Control voltage type 1: DC. Frequency of control voltage 1: 0 Hz. Rated switching current: 16 A. Supply voltage: 24 V. Voltage type of supply voltage: DC. Max. incandescent lamp load: 2000 W. Max. fluorescent lamp load: 1000 VA. Max. fluorescent lamp load (duo circuit): 1000 VA. Max. fluorescent lamp load (parallel compensated): 1000 VA. Fluorescent lamp load (parallel compensated): 750 VA. Max. switching current (cos phi: 0). Max. switching current (cos phi: 0.6): 12 A. Suitable for manual operation: Yes. Interrupter switch for 35 mm rail, 1 NO contact for 16 A / 250 V AC, contact material AgSnO², max. switching capacities at 230 V AC: AC1 4000 VA, AC15 750 VA, incandescent and halogen lamps 2000 W, fluorescent lamps compensated 750 W, fluorescent lamps uncompensated 1000 W, energy saving lamps 400 W, LED (230 V AC) 400 W, LV halogen lamps or LED with ECG 400 W, LV halogen lamps or LED with CCG 800 W, coil data: 24 V DC, 5 W, 105 Ohm, width 17.5 mm, switching sequence: on/off, test button and mechanical switch position indicator, relay protection class: IP 20.