Description
Technical
781 Breather Drain Plug, Globally Approved, Explosive Atmosphere Cable / Conduit Accessory
• 781E for Ex e use
• 781D for Ex d use
• Drains equipment susceptible to moisture collection
• Enables equipment to breathe
• General purpose / industrial version available
• Nylon Ex e only version available (-20°C to +60°C)
• -60°C to 130°C (metallic versions)
• Globally marked, IECEx, ATEX & cCSAus
HOW TO ORDER
e.g. 781 – D – M – 3 = Ex d – M25 e.g. 781 – E – M – 3 = Ex e – M25 Other Thread Variations are available on request. For further information on ordering please refer to page 150. The CMP 781E range of Increased Safety type ‘e’ breather / drain plugs have been tested together with CMP serrated washers to ensure that in areas that are subject to vibration the plug does not suffer from self-loosening and in advertently fall out of the enclosure. Serrated washers are not included as standard but can be ordered separately
| Design Specification | BS 6121:Part 1:1989, IEC 62444, EN 62444 |
| Enclosure Protection | IK10 to IEC 62262 (20 joules) Brass & Stainless Steel Only |
| ATEX Certificate | SIRA 10 ATEX 1307U |
| Code of Protection | 781D: II 2G Ex d IIC Gb, II 1D Ex ta IIIC Da 781E: II 2G Ex e IIC Gb, II 1D Ex ta IIIC Da |
| Compliance Standards | EN 60079-0,1,7,31 |
| IECEx Certificate | IECEx SIR 10.0149U |
| Code of Protection | 781D: Ex d IIC Gb, Ex ta IIIC Da 781E: Ex e IIC Gb, Ex ta IIIC Da |
| Compliance Standards | IEC 60079-0,1,7,31 |
| cCSAus Certificate | 1055233 |
| Code of Protection | 781D: Ex d IIC, Class I, Zone 1 AEx d IIC; Class I Div 1, Groups A,B,C,D IP66, Enclosure Type 4X 781E: Ex e II, Class I, Zone 1, AEx e II IP66, Enclosure Type 4X |
| Compliance Standards | CSA C22.2 No 0-10, 0.5, 30, 94; e 60079-0,1,7, E61241-1-1, UL50, 1203, UL60079-0,1,7 |
| UL Certificate | E253914 |
| Code of Protection | 781D: Class I, Zone 1 AEx d IIB; Zone 20 AEx ta IIIC 781E: Class I, Zone 1, AEx e IIC; |
| EAC Certificate (Formerly GOST R, K & B) | TC RU C-GB.AA87.B.00487 |
| GOST R Certificate | POCC.GB.35.H00102 |
| CCOE / PESO (India) Certificate | P333688 |
| INMETRO Certificate | TÜV 12.133OU |
| NEPSI Certificate | GYJ13.1139X (781D), GYJ13.1138X (781E) |
| RETIE Approval | 03866 |
| Marine Approvals | LRS: 01/00173 |
| Continuous Operating Temperature | 781D: -60°C to +130°C 781E: -60°C to +130°C (-20°C to +60°C Nylon) |
| Ingress Protection Rating ** | 781D: IP66 (when fitted with CMP sealing accessories) 781E: IP66 |
| Available Materials | Brass, Nickel Plated Brass, Aluminium, Stainless Steel, Nylon (781E only) |
| Accessories Included (781E only) | Integral Entry Thread equipment interface ‘O’ ring seal, Castellated Locknut |
Product Table
Metric
| Ordering Reference (781D) | Ordering Reference (781E) | Thread Size | Minimum Thread Length | Protrusion Length “F” | Across Flats Dimension | Across Corners Dimensions | Max Installation Torque (Nm) |
| 781DM2 | 781EM2 | M20 x 1.5 | 15.0 | 12.7 | 30.0 | 33.0 | 7 |
| 781DM3 | 781EM3 | M25 x 1.5 | 15.0 | 12.7 | 36.0 | 39.6 | 10 |
| 781DT1 | 781ET1 | ½” NPT | 19.9 | 12.7 | 30.0 | 33.0 | 7 |
| 781DT2 | 781ET2 | ¾” NPT | 20.2 | 12.7 | 36.0 | 39.6 | 10 |
| Dimensions displayed in millimeters unless otherwise stated | |||||||
Imperial
| Ordering Reference (781D) | Ordering Reference (781E) | Thread Size | Minimum Thread Length | Protrusion Length “F” | Across Flats Dimension | Across Corners Dimensions | Max Installation Torque (Nm) |
| 781DM2 | 781EM2 | M20 x 1.5 | 0.59 | 0.50 | 1.18 | 1.30 | 7 |
| 781DM3 | 781EM3 | M25 x 1.5 | 0.59 | 0.50 | 1.42 | 1.56 | 10 |
| 781DT1 | 781ET1 | ½” NPT | 0.78 | 0.50 | 1.18 | 1.30 | 7 |
| 781DT2 | 781ET2 | ¾” NPT | 0.80 | 0.50 | 1.42 | 1.56 | 10 |
| Dimensions displayed in inches unless otherwise stated | |||||||