ABB 3KDE175321L9100 ABB Switch-Disconnectors and Fused Switches

Razz Middle East supplies ABB switch-disconnectors in Saudi Arabia, sourced to order against the 1SCA reference. These are the OT and OS family devices used to isolate a circuit for maintenance, to switch a load on and off under normal conditions, and to act as the main switch of a board or an enclosed local isolator at a motor. Quoted per part number, delivered duty-paid, with a typical lead time of three weeks.

ABB 3KDE175321L9100

This page covers ABB part number 3KDE175321L9100 — ABB Switch-Disconnectors and Fused Switches. Quote the full part number with your enquiry and the item is unambiguous: one part number identifies one exact product variant, including options that are not visible in the description.

About ABB Switch-Disconnectors and Fused Switches

A switch-disconnector is not a protective device. It makes and breaks load current and provides a visible, lockable isolating gap, but it does not interrupt a short circuit — that is the job of the breaker or fuse upstream, or of the fuse carried inside a fused version. ABB's OT range covers the unfused devices and the OS range the fuse-combination units, together spanning rated currents from roughly 16 A to around 3,150 A across the frame sizes, in three- and four-pole versions, with switching duty classified under IEC 60947-3 utilisation categories such as AC-21 for resistive loads and AC-23 for motor loads.

The reference records how the device is built as much as its rating. Base-mounted units sit inside a panel and are operated through a door-coupled handle on an extension shaft; front-operated units carry the handle directly; enclosed OT..M types come fitted in a plastic or metal box for wall mounting next to the equipment they isolate. Change-over and three-position versions transfer a load between two sources, as in a manual mains-generator changeover. Accessories in the same range cover handles, extension shafts, auxiliary contacts, terminal shrouds and padlocking kits.

ABB Switch-Disconnectors and Fused Switches in Saudi Arabia

Isolators are a permit-to-work item in Saudi industry, which is why they appear at every motor and every skid. Aramco, SABIC and Ma'aden maintenance procedures require a lockable local isolator in sight of the machine before work starts, so enclosed OT..M units sit beside pumps, fans, agitators and conveyors across Jubail, Yanbu and the mining sites at Ras Al Khair. Water and desalination plants use them on well-field and booster pumps, often in outdoor enclosures exposed to sun and salt. Larger frames act as incoming main switches in distribution boards and motor control centres, and change-over versions are used for manual transfer to standby generators in hospitals, data rooms and remote facilities across the Kingdom. Fused OS versions remain common where a design relies on fuse protection rather than a moulded-case breaker. Devices are applied on a 380/400 V, 60 Hz SEC supply, and imported switchgear is subject to SASO conformity.

Ordering and lead time

Give the full 1SCA reference from the device or the panel schedule. Rated current alone is not enough: the same current is available base-mounted, front-operated, in a changeover configuration and pre-enclosed, and those are different references. Tell us the pole count, whether the device is fused, how it will be operated — direct handle, door-coupled handle with shaft, or motorised — and, for an enclosed unit, the ingress protection required for the location. Handles, extension shafts, auxiliary contacts and terminal shrouds are ordered as separate references, so a bare switch quoted on its own will not arrive ready to mount on a door. If you are replacing an existing isolator, a photograph of the device and of how it is operated saves a round of questions. Sourced to order, typical lead time three weeks, delivered duty-paid.

Specifications are taken from the supplier's published catalogue data. Confirm against the manufacturer's current datasheet before ordering.