S-Series Size 4L Enclosure
Technical Data
316 L Stainless Steel.
Increased Safety 
II 2 GD Exe II ExtD.
Size 4L (S4L) Certificates:
Baseefa Certificate No. Baseefa08 ATEX 0208X
IECEx Certificate No. IECEx BAS 08.0065X
Z Size 4L (ZS4L) Certificates:
Baseefa Certificate No. Baseefa08 ATEX 0207U
IECEx Certificate No. IECEx BAS 08.0064U
Suitable for use in Zone 1, Zone 2, Zone 21 and Zone 22.
Construction and Test Standards: IEC/EN 60079-0, IEC/EN 60079-7, IEC/EN 61241-0 and IEC/EN 61241-1.
Ingress Protection: IP66 to IEC/EN 60529.
Deluge protection to DTS01.
Operating Temperature Range: -60°C to +80°C.
Temperature Class and Ambient: T6 40°C, optional T5 with ambients up to 65°C.
Alternative certification options available:
Exe II.
AExe II/Exe II.
R-Exe IIU.
Approved for use in Kazakhstan.
S-Series Size 4 Enclosure
| MAXIMUM QUANTITY OF ENTRIES PER FACE | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Thread Size | M16 | M20/O | M20/A | M25 | M32 | M40 | M50 | M63 | M75 |
| Bottom Face C Quantity | 44 # | 42 | 32 | 26 | 14 | 11 | 6 | 4 | 3 |
| Side Faces B & D Quantity |
26 # | 18 | 18 | 11 | 6 | 5 | 4 * | 2 | 1 |
| # Serrated washers/locknuts with large outside diameters may foul on adjacent cable glands. * Serrated washers/locknuts must not foul on aperture wall. |
|||||||||
| TERMINAL CAPACITY DATA | |||||||
|---|---|---|---|---|---|---|---|
| Terminal Type | Conductor Size (mm²) | Max. Volts |
Max. Physical Terminal Content |
Reduced Terminal Content At Max. Terminal Amps |
|||
| Min. | Max. | Terminal Quantity |
Amps | Terminal Quantity |
Amps | ||
| WDU 2.5 | 0.5 | 2.5 | 550 | 252 | 4 | 19 | 17 |
| WDU 4 | 0.5 | 4 | 690 | 188 | 6 | 18 | 22 |
| WDU 6 | 0.5 | 6 | 550 | 144 | 9 | 15 | 29 |
| WDU 10 | 1.5 | 10 | 550 | 112 | 13 | 13 | 40 |
| WDU 16 | 1.5 | 16 | 690 | 96 | 18 | 11 | 53 |
| WDU 35 | 2.5 | 35 | 690 | 72 | 30 | 8 | 87 |
| WDU 50 | 6 | 50 | 690 | 60 | 39 | 11 | 88 |
| WDU 70N | 10 | 70 | 690 | 45 | 52 | 7 | 134 |
| WDU 70/95 | 16 | 70 | 690 | 11 | 100 | 6 | 134 |
| WDU 70/95 | 16 | 95 | 690 | 11 | 116 | 8 | 134 |
| WDU 120/150 | 35 | 120 | 690 | 9 | 139 | 6 | 162 |
| WDU 120/150 | 35 | 150 | 690 | 9 | 148 | 78 | 153 |
| WFF 35 | 2.5 | 35 | 1100 | 22 | 58 | 113 | 76 |
| WFF 70 | 2.5 | 70 | 1100 | 9 | 116 | 9 | 116 |
| WFF 120 | 6 | 120 | 1100 | 7 | 163 | 7 | 162 |
The enclosure is supplied with an integral internal/external earth stud assembly.
The terminals listed are restricted to a minimum operating temperature of -50°C.
