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EX Series
Standard
Explosion
Proof
Switches
The EX Series features the smallest UL listed housings available for use in
hazardous locations. Flame paths within the housing cool exploding gases
below the kindling temperature before they reach the explosive gases
surrounding the housing.
Options available include single or double conduit connection.
These switches are not sealed against liquids and should not be used where
there will be liquid splash. If a weather sealed explosion proof switch is
required please select from the CX or LSX/BX series.
Sealing: NEMA 1, 7 (Class I, Division I, Groups C, D)
9, (Class II, Division I, Groups E, F, G)
Operating temperature: Standard -40 °C to 71 °C (-40 °F to 160 °F)
High 100 hr @ 400 °F
Approvals: UL, CSA
Conduit: ½ in - 14NPT
Contacts: Silver
Electrical ratings:
A UL/CSA Rating: 15 A, 125, 250 or 480 Vac;
1
/
8
Hp, 125 Vac; ¼ Hp, 250 Vac;
½ A, 125 Vdc; ¼ A, 250 Vdc.
B UL/CSA Rating: 20 A, 125, 250 or 480 Vac;
10 A, 125 Vac “L”;
1 Hp, 125 Vac; 2 Hp, 250 Vac;
½ A, 125 Vdc; ¼ A, 250 Vdc.
C UL/CSA Rating: 10 A, 125 or 250 Vac;
0.3 A, 125 Vdc; 0.15 A, 250 Vdc
.
D UL/CSA Rating: 10 A, 125, 250 or 480 Vac;
½ A, 125 Vdc; ¼ A, 250 Vdc.
E UL Rating: 1 A, 125 Vac.
Switching options:
SPDT DPDT
Single Pole, Double Throw Double Pole, Double Throw
Snap action contacts (1NC/1NO) Snap action contacts (2NC/2NO)
Side rotary actuated switches
OPTIONS
No lever
Note: Levers are ordered separately (see pages 69-71
for details)
Operating force max. (OF):
Electrical rating A 0,22 N m (31.25 in oz)
Electrical rating B 3,34 N to 8,90 N (0.75 lb to 2.0 lb)
Pretravel max. (PT): 5,56 mm (0.219 in) 8°
Overtravel max. (OT):
Electrical rating A 90°
Electrical rating B 25°
Differential travel max. (DT):
Electrical rating A 0,18 mm (0.007 in) 0.25°
Electrical rating B 0,3 mm (0.012 in) 4°
ACTUATION CONTACT ELECTRICAL RATING REFERENCE
CW SPDT A EX-AR20
CCW SPDT A EX-AR230
CW SPDT B EXA-AR20
Actuators
EXPLOSION PROOF SWITCHES
