Edwards Signaling 371 GuardSwitch Explosion Proof Catalog Page
Interlock Switch
Actuator
Switch
conduit
sensing face
sensing face
5.75''
14.61cm
5.27''
13.39cm
0.24''
0.61cm
0.83''
2.11cm
0.42''
1.07cm
5.75''
14.61cm
5.26''
13.36cm
0.24''
0.61cm
0.64''
1.63cm
2.03''
5.16cm
0.64''
1.63cm
2.33''
5.92cm
1.10''
2.79cm
0.28''
0.71cm
1.12''
2.84cm
1.49''
3.78cm
0.22''
0.56cm
dia.
1.51''
3.84cm
371 GuardSwitch Explosion Proof
Applications
• Explosive Environments • Requiring Highly Defeat
- Automobile Paint Booths Resistant Switches
- Industrial Paint Booths • Enclosure UL classified for
- Chemical/Toxic Environments hazardous locations classes:
- Fertilizer Manufacturers Class I, Group B, C, D
- Grain Mills
General Specifications
Enclosure UL Explosion Proof, Black Anodized Die
Temperature Range -40°F to 180°F (-40°C to 80°C)
Environmental Hermetically Sealed Contact Switch
NEMA Rating 1, 2, 5
Protection Class IP 64
Response Time 1 msec (5.4VA); 10 msec (150VA)
Life Cycles
Conduit Connection 1/2" Threaded NPT
UL
Cast Aluminum
Encapsulated in Polyurethane
100,000 Under Full Load;
Up to 200,000,000 Under Dry Circuit
All Models
Class II, Group E, F, G
Class III, Divisions 1 & 2
File E 22942
Order Info. Electrical Specifications
Part No. Contact
Config. AC DC AC DC AC DC Resistance Max. Min. Range Type
371-CT N.O. 2.5VA 2.5W 30V(@0.08A) 30V(@0.08A) 0.18A(@13.8V) 0.18A(@13.8V) 0.5 Ohms 0.5"(1.3cm) 0.25"(0.635cm) 1.2"(3.0cm) #6 Screws
371-DT4 N.O. 150VA NA 120V(@1.25A) NA 1.25A(@120V)3 NA NA 0.5"(1.3cm) 0.25"(0.635cm) 1.2"(3.0cm) #6 Screws
Warning— Each electrical rating is an individual maximum and cannot be exceeded!
1
2
3
4
Configuration with actuator away from the switch
Proximity of ferrous materials usually reduces sense range — typically by 50%. The shape and type of material cause a wide diversity of effects.
Testing is required to determine actual sense range for specific applications.
Can withstand inrush surge up to 4 amps. Voltage drop is 1.5V, minimum switch current, 30 mA, triac output .
Do not exceed 10 switches in series.
1
Load Rating Switching Voltage, Max. Switching Current, Max. Contact Sense Range2 Break Terminal
INTERLOCK SWITCH
300 SERIES
Loading...