Edwards Signaling 371-BT GuardSwitch Explosion Proof Catalog Page

SAFETY

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

Actuator

Switch

conduit

sensing face

sensing face

300-BT SERIES

Safety Switch

371-BT GuardSwitch Explosion Proof

Applications

• Requiring Explosion-Proof • UL Enclosure Classified for Use
Enclosure for Hazardous in Hazardous Locations:
Locations

• Meets ANSI, Semi S2 & Class II, Group E, F, G
European Safety Standard Class III, Divisions 1 & 2
for the Highest Machine
Risk Category 4 when used
with the INT Safety Relay

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
(individual circuits) The two circuits do not switch

Life Cycles

Conduit Connection 1/2" Threaded NPT
UL/CSA/TUV All Models

Cast Aluminum

Encapsulated in Polyurethane

simultaneously and depend on the speed
of the guard closure.
A delay less than 50 msec is typical.
100,000 Under Full Load;
Up to 200,000,000 Under Dry Circuit

Class I, Group B, C, D

10

Electrical Specifications

Circuit Circuit Contact Load MAX Switching MAX Switching
No. Type Configuration Rating Voltage Current

1 Switch N.O. 40W/VA 48VAC/VDC 1.0ADC, 0.7AC

File E 122942 LR89176 U9880128199005
When used with INT
Safety Monitor Relay

2 Tamper N.C. 10W/VA 48VAC/VDC 0.3A

Order Information

Part Number
Configuration Minimum Maximum Range Type

371-BT DPST: 1 N.O., 1 N.C. 0.3"(0.8cm) 0.6"(1.5cm) 1.2"(3.0cm) #6 screws

Warning— Each electrical rating is an individual maximum and cannot be exceeded!

1

Configuration with actuator away from the switch

2

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.

Contact

1

Sense Range2 Sense Range2 Break Terminal