S-Series & EJB Series Enclosures Technical Information
- To ensure that the maximum temperature as permitted by certification is not exceeded, the dissipated wattage factor formula is used: W = N x F x I² (see enclosure wattage factor).
- It is not permitted to fit more than one conductor per side in rail or direct mounted terminals unless using an insulated Bootlace Ferrule.
- Linked and mixed terminal arrangements other than those specified in the data tables are available, but the voltage and current figures may be affected to ensure the maximum certified wattage factor is not exceeded. Please contact Hawke Technical Sales for more information.
- For Intrinsically Safe Applications, Exe power terminals can be supplied in blue on request. (Note: the enclosure will remain Exe certified).
- The enclosure is provided with an integral internal / external earth stud assembly, but when required, one or more rail mounted earth terminals may be fitted inside the enclosure but the quantity of power terminals shall be reduced accordingly. (Note: power terminals may be used as ‘clean earths’).
- The enclosure has metric clearance / plain entry holes as standard. Alternative clearance holes are available provided they are to a recognised standard e.g. BSPP, ET etc. (Parallel threads only). Plain entry holes must maintain the following:
a) The plain hole shall be no larger than 0.7mm above the major diameter of the entry thread.
b) The cable gland or stopping plug is secured internally by a locknut, such that the cable gland or stopping plug will not be dislodged by a 7Nm impact.
c) The enclosure should be maintained at IP66 by the use of a suitable sealing washer under the shoulder of the cable gland. - The customer may drill plain entry holes in the enclosure providing they are in accordance with the relevant code of practice and comply with the certification, contact Hawke Technical Sales for more information.
- When mixed entries are required on a face, contact Hawke Technical Sales for more information.
- All unused entry holes must be fitted with a stopping plug as listed on the enclosure certificate. The stopping plug shall be held in place by a locknut.
Specification
- S-Series Certification:
II2 GD Exe II ExtD. - EJB Series Certification: Certificate No's Baseefa 08ATEX0208X and IECEx BAS08.0065X.
- Zones of Use: Zone 1, Zone 2, Zone 21 & Zone 22.
- Temperature Class & Ambients: T6 40°C as standard. Optional T5 with ambients up to 65°C.
- Operating Temperature Range: 60°C to +80°C.
- Degree of Protection: IP66 and Deluge proof to DTS01.
- Material: 316 L Stainless Steel.
- Finish: Electropolished as standard (optional - unpolished finish).
- Impact Resistance: Up to 7Nm.
- Weatherproofing: By bonded silicone sponge lid and gland plate gaskets.
- Certification Label: Stainless Steel or optional certified self adhesive foil.
- Lid Fixing Screws: Stainless Steel (complete with nylon retaining washer).
- Additional Options: Breather/Drain devices. Epoxy paint finish for colour coding. EMI/RFI wire mesh on lid gasket for EMC requirements.
- Additional Labels: Stainless Steel or laminated plastic (traffolyte) for external use only or optional (certified) self adhesive foil for external and/or internal use.
- Window: Windows available for S2 / ZS2 to S9 / ZS9 Stainless Steel boxes. Windows will be located in the lid and are manufactured from 6mm thick toughened glass with a Stainless Steel Grade 316L frame and silicone sponge gaskets which provide IP66 Ingress Protection.
- Internal Mounting Plates: The S / ZS Series boxes can be supplied with an internal plated steel or stainless steel mounting plate.
Earth Continuity
These enclosures have an integral internal / external earth stud assembly.
S-Series & EJB Series Enclosure technical information data sheet. 
