Terminal boxes, to European Standards (ATEX) Terminal box þ ATEX certification þ BASEEFA test certification þ Versions with horizontally, vertically or diagonally mounted terminal strip þ Different terminal types can be mounted þ External earth connection Terminal box Terminal box, empty enclosure þ Integrated earthing pad for metal glands Type OTB-122 Type OEB-122 Explosion protection Ex protection type (according to EN 50014) Ex II 2 GD T 85°C, EEx e II T6 increased safety BS EN 50014, BS EN 50019; 1994 BS EN 50281-1-1; 1998 Ambient temperature (special temperature range on request) - 20 °C to + 40 °C extended ambient temperature range - 55 °C to + 65 °C þ Extended ambient temperature range þ Possibility of an M 20/M 25 cable entry in the lid black Features Technical data Description The OTB terminal box, both distribution box and empty enclosure, is manufactured of high impact resistance proof, glass-fibre reinforced polyester SMC & DMC providing extraordinary stability and corrosion resistance. 03-0330-0200-10/99-BCS-B201171/1E The standard enclosure consists of black, antistatic material. OTB distribution box and empty enclosure have been tested and approved by the BASEEFA authorities according to the latest European Standards. These correspond to the requirements of the EC directive 94/9/EC (ATEX). Installation instructions The installer must make sure that the enclosure used is suitable for the corresponding field of application. This means that the marking must correspond to the classification of the Ex area. Also must the temperature class of the distribution box meet the respective requirements. 2/18 Material polyester black, anti-static, glass-fibre reinforced, surface resistance <109 Ω flame retardant: IEC 92.1, UL94V0 Colour/coating polyester black, anti-static Lid screws (other models on request) captive slotted or hexagon socket screw, high-quality stainless steel 316 Standard-seals (seals on request) captive silicone o-ring in groove, protected against the penetration of foreign bodies, according to IP 66 (IEC 144/EN 60529) - 55 °C to + 80 °C Mechanical resistance (according to EN 50014) impact energy > 2 x 7 Nm Protection class EN 60529/IEC 60529 (higher protection class on request) IP 66 Max. power dissipation at Tu + 40 °C, 4 W at Tu + 55 °C, 2 W at Tu + 65 °C, 1.3 W Certification (further certifications on request) empty enclosure: part certification BAS98ATEX3007U distribution box: conformity certification BAS98ATEX3008X Accessories Earthing bars OS3, XE earthing studs, ES earthing studs Terminal box,OTB-122, to European Standards (ATEX) Selection chart Dimensions Max. number of terminals Number of strips Side A Side C Side D 10 SAK 2.5 Max. Max. current voltage (V) (A) 1 horizontal or diagonal 15 12 SAK 2.5 1 diagonal 14 8 SAK 4 1 horizontal or diagonal 21 6 SAK 6N 1 horizontal or diagonal 26 0.5 to 6.0 5 SAK 10 1 horizontal or diagonal 37 2.5 to 10.0 EK 4 0.5 to 4.0 BET 2 0.5 to16.0* 550 0.5 to 4.0 EK 4 0.5 to 4.0 EK 10 2.5 to 10.0 BET 2 0.5 to 16.0* BET 2 0.5 to 16.0* 21 21 BK 4 (1 x 4-pole) n/a BK 6 (1 x 6-pole) 275 0.5 to 4.0 26 418 0.5 to 6.0 37 726 0.5 to 16.0* 21 20 BK 12 (1 x 12-pole) MK 6/6 (1 x 6-pole) BTB 4 (1 x 4-pole) n/a BTB 6 (1 x 6-pole) View on sides A+B and C+D Max. conductor size 0.5 to 2.5 1 horizontal BK 3 (1 x 3-pole) Entries 15 11 SAK 2.5 Side B All dimensions in mm. Fixing hole diameter 7 mm. Max. Earth conductor size terminal (mm²) þ A maximum of 2 earthing bars type QS3 may be fitted. þ Alternative terminal types are available. The maximum number of terminals listed above depends on the maximum conductor size and maximum current. At least one earth terminal must be connected. The enclosure can be mounted with the terminal strip horizontally or vertically aligned or equipped with a single diagonally mounted terminal strip. Standard entry arrangements View on side R Side A Thread size M 20 Side Max. entries per side Position of holes 1 2 1M 2M, 3M 1 1M or 2M or 3M 2 2M, 3M A+B 1 1M C+D 1 1M A+B C+D M 25 Notes Locknuts max. 27 mm A/C Locknuts max. 27 mm A/C þ Other equivalent entry sizes (such as Pg) are available. þ EEx e II nylon plugs can be fitted as required. Special rear entry positions 03-0330-0200-10/99-BCS-B201171/2E Thread size Side M 20 R Max. entries per side Position of holes Notes 2 R2, R5 4 R1, R3, R4, R6 Locknuts max. 27 mm A/C þ Single M 20 entry in the lid is also possible. þ Single M 25 entry in the lid is also possible. Order no.: OTB-122 2/19 1 2 3 4 5