Enclosure 6N Pressure Switches
Page 5
POTENTIALLY EXPLOSIVE ATMOSPHERES
(HAZARDOUS LOCATIONS)
Suitable for Zone 1, Ex db IIC explosive atmospheres, in accordance with Potentially
Explosive Atmospheres Directive 2014/68/EU (ATEX)
Suitable for Division 1; Class 1, Groups A, B, C and D; Class II, Groups E, F and G
hazardous locations, in accordance with the National Electric Code (NEC), and
applicable UL, CSA, FM, INMETRO specifications.
ELECTRICAL CONNECTIONS
18 AWG free leads 18 in (46 cm) long are standard, with a green wire grounded to the
case. 72 inch (183 cm) leads are available as R Option, and other lead lengths may be
ordered as special configurations. The leads are intended for installation in conduit
capable of withstanding possible explosion pressures, and the leads are factory sealed.
WARNING
All field wiring must comply with requirements of the NEC or applicable local or
national electrical codes, including wire gauges and insulation temperature ratings.
Conduit seals may be required.
Figure 2. Form C and CC Schematics Shown Below the Decreasing Setpoint
NOTE
The direction of increasing pressure shown above represents the direction of increasing
vacuum on model 181P.