Noshok 400L-3-2-3/30-8 Mechanical Block Switch 1/4 NPT Male Hirschmann Conn

400 Series Heavy-Duty Mechanical Switch

Water/
Wastewater

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SPECIFICATIONS
Switching parameters Number Function Contact rating Non-repeatability Contact material Frequency Media	1 SPDT snap-action switch Up to 24 Vdc Max 3A Up to 250 Vac Max 6A ±2% of full scale of adjustment range Solid Silver, self-cleaning Max. 200 cycles/min. Diaphragm type, compressed air or non-corrosive liquids Piston type, self-lubricating fluids such as hydraulic oil or grease
Pressure ranges	0 psig to 300 psig through 0 psig to 5,000 psig Adjustment knob from 3 psig to 4,600 psig dependent on full scale range
Switch adjustment Switch point Hysteresis	Full scale Diaphragm type, 1% to 11% of adjustment range full scale Piston type, 2% to 8% of adjustment range full scale
Service life	>1,000,000 load cycles
Temperature ranges	Media -4 °F to 176 °F (-20 °C to 80 °C) Ambient -4 °F to 176 °F (-20 °C to 80 °C) Storage -13 °F to 185 °F (-25 °C to 85 °C)
Proof pressure	300 psi or 5,000 psi depending on adjustment range
Measuring element	NBR diaphragm ≤ 230 psig Stainless steel piston with NBR seal ≥ 500 psig 1/4″ NPT and 7/16-20 SAE zinc-plated steel connections standard, others available on request
Housing material	Zinc die cast
Environmental rating	IP65 for Hirschmann IP67 for M12 x 1
Electromagnetic rating	CE compliant to EU Standard 73/23/EWG RFI, EMI and ESD protection
Shock	30 g’s according to IEC 60068-2-27
Vibration	10 g’s according to IEC 60068-2-6
Weight	Approximately 0.66 lb.

Options & Accessories

400 Series Heavy-Duty Mechanical Switch

Water/
Wastewater

If you are viewing on a smaller screen or with screen zoom, please use the horizontal scroll bar at the bottom of this table to see all information.

SPECIFICATIONS
Switching parameters Number Function Contact rating Non-repeatability Contact material Frequency Media	1 SPDT snap-action switch Up to 24 Vdc Max 3A Up to 250 Vac Max 6A ±2% of full scale of adjustment range Solid Silver, self-cleaning Max. 200 cycles/min. Diaphragm type, compressed air or non-corrosive liquids Piston type, self-lubricating fluids such as hydraulic oil or grease
Pressure ranges	0 psig to 300 psig through 0 psig to 5,000 psig Adjustment knob from 3 psig to 4,600 psig dependent on full scale range
Switch adjustment Switch point Hysteresis	Full scale Diaphragm type, 1% to 11% of adjustment range full scale Piston type, 2% to 8% of adjustment range full scale
Service life	>1,000,000 load cycles
Temperature ranges	Media -4 °F to 176 °F (-20 °C to 80 °C) Ambient -4 °F to 176 °F (-20 °C to 80 °C) Storage -13 °F to 185 °F (-25 °C to 85 °C)
Proof pressure	300 psi or 5,000 psi depending on adjustment range
Measuring element	NBR diaphragm ≤ 230 psig Stainless steel piston with NBR seal ≥ 500 psig 1/4″ NPT and 7/16-20 SAE zinc-plated steel connections standard, others available on request
Housing material	Zinc die cast
Environmental rating	IP65 for Hirschmann IP67 for M12 x 1
Electromagnetic rating	CE compliant to EU Standard 73/23/EWG RFI, EMI and ESD protection
Shock	30 g’s according to IEC 60068-2-27
Vibration	10 g’s according to IEC 60068-2-6
Weight	Approximately 0.66 lb.