ELECTRICAL
32
Switch
Terminal
Standard
Intn’l
X-Proof
US
X-Proof
X-Proof
S1
A
21
1
N.C.
---
S1
B
22
2
N.C.
---
S2
C
13
3
N.O.
---
S2
D
14
4
N.O.
---
S1
A
21
---
---
N.C.
S1
B
22
---
---
N.C.
S2
C
13
---
---
N.O.
S2
D
14
---
---
N.O.
Table 2. Electrical Schematic