The PRE Series, with 16, 32, 63 and 125 A plugs and sockets, is rated as Increased Safety. All sockets incorporate switching technology that prevents removal of the plug under electrical load and does not disturb the potentially explosive atmospheres of Zone 1 and 2 locations. Plugs lock when the power is on. The socket can be padlocked in the “Off” position when the plug is not inserted. The PRD Series is Appleton’s ATX flameproof line of plugs and sockets. Available in multiple pin configurations, 16 and 32 A models are available in aluminum with a load-break disconnect switch. 80 A and 125 A models offer a cast iron wall-mounted socket that is fitted with a load-break isolating switch. Plugs cannot be removed with the power on. Disconnections are completed within single or dual flameproof chambers before the plug is removed from the socket.

PRE Series
16A and 32A: Plug and socket assembly is equipped with a patented silver-plated linear switch which allows a total disconnection of power when plug is removed: The high voltage contact separation is in a flameproof chamber and the automatic electrical disconnection of each phase is contained in a second flameproof chamber Short circuit protection is 20 kA, while normal reference is 10 kA Different voltages are color coded for easy identification The sockets are keyed to accept only ATX plugs (other plugs can not be inserted) ATX plugs can be used in non-hazardous sockets 63A and 125A: Positive polarization: only ATX plugs of same style, number of poles and ampere rating may be used with these sockets Interlocked 3-pole or 4-pole Ex de disconnecting on-load switch, with auxiliary early break contact (capacity 2.5 mm2 max) Plug is mechanically locked in socket when switch is ON Switch operating handle can be padlocked in OFF position (max 4 padlocks) Plug cannot be inserted or removed unless switch is in OFF position
>> Read Technical Datasheet
Standard Materials of Fixture		Applications
High impact resistance polycarbonate High impact resistance fiberglass reinforced polyester Polyamide 316L stainless steel in 125A socket		Plugs and sockets are used with portable or stationery electrical equipment such as lighting systems, conveyors, heaters, motor generators, air conditioning equipment, compressors and pumps. For use in corrosive atmospheres and installations in Zone 1 and 2 and 21 and 22 of the oil and gas industry; such as refineries, chemical and petrochemical plants, pipelines, loading docks and onshore and offshore drilling platforms.
Plugs – Increased Safety
		16A: One PG16 integrated cable gland (Ø 6.5 to Ø 14.5 mm) Terminal capacity 2.5 mm2 32A: One PG21 integrated cable gland (Ø 8 to Ø 18.5 mm) for 3P+N+E versions Terminal capacity 6 mm2 63A: One integrated cable entry for unarmored flexible cable Ø 17.5 to 29 mm for 3P + E versions and Ø 17.5 to 32 mm for 3P + N + E versions Terminals capacity 16 mm2 125A: One integrated cable entry for unarmored flexible cable Ø 30 to Ø 48 mm Terminals capacity 50 mm2
Zone 1 & 2 – 21 & 22 ATEX II 2 GD IECEx CE
Ex de IIC T6 or T5 Ex tD A21 T68°C IP66 – IK09 (IK09/10 for 16A version)
Wall Mounting Sockets – Increased Safety
		16A: Three M20 threaded entries (one on the top and two on the bottom) Supplied with one M20 cable gland (Ø 6.5 to Ø 14.5 mm) and two M20 blanking plugs Terminal capacity 2 x 4 mm2. Can be through-wired Fitted with three linked earth terminals 32A: Three M25 threaded entries (one on the top and two on the bottom) Supplied with one M25 cable gland (Ø 8 to Ø 18.5 mm) and two M25 blanking plugs Terminal capacity 2 x 6 mm2 Fitted with three linked earth terminals 63A: Supplied with one M50 cable gland (two M50 for Through-wired versions) for unarmored cable Ø 28 to Ø 42 mm, and one M25 blanking plug Terminal capacity 1 x 35 mm2 (2 x 35 mm2 for Through-wired versions) 125A: One M63 cable gland for unarmored cable Ø 36 to Ø 44 mm, and one M25 blanking plug Terminal capacity 120 mm2
Zone 1 & 2 – 21 & 22 ATEX II 2 GD IECEx CE
Ex de IIC T6 or T5 Ex tD A21 T68°C IP66 – IK09 (IK09/10 for 16A version)
Mobile Sockets – Increased Safety
		16A: One PG16 integrated cable gland (Ø 6.5 to Ø 14.5 mm) Terminal capacity 2 x 4 mm2 32A: One PG21 integrated cable gland (Ø 8 to Ø 18.5 mm) for 2P+E and 3P+E versions. One PG29 integrated cable gland (Ø 18 to Ø 25 mm) for 3P+N+E versions Terminal capacity 2 x 6 mm2
Zone 1 & 2 – 21 & 22 ATEX II 2 GD IECEx CE
Ex de IIC T6 or T5 Ex tD A21 T68°C IP66 – IK09 (IK09/10 for 16A version)
Flush Sockets – Increased Safety
		16A: Terminal capacity 2 x 4 mm2 32A: Terminal capacity 2 x 6 mm2
Zone 1 & 2 – 21 & 22 ATEX II 2 GD IECEx CE
Ex de IIC T6 or T5 Ex tD A21 T68°C IP66 – IK09 (IK09/10 for 16A version)