Schneider Electric TeSys Deca LC1D Contactor
Overview
The Schneider Electric TeSys Deca LC1D is the next-generation evolution of the classic TeSys D contactor platform, retaining the same 9–95 A (AC-3) current range and physical footprint while upgrading the internal materials, terminal technology, and short-circuit current rating to current industrial standards. The TeSys Deca LC1D is the specification of choice for new panel builds across Oman and the GCC because it slots directly into legacy TeSys D panel layouts while delivering up to 100 kA SCCR and UL60335-compliant, higher heat and fire-endurance plastics.
As the official authorized partner and exclusive regional representative for Schneider Electric, Seven Star LLC proudly supplies the TeSys Deca LC1D range from stock in Muscat, backed by genuine factory warranty and technical support for engineering, procurement, and maintenance teams across Oman and the wider GCC. Every unit is sourced through Schneider Electric’s authorized distribution channel, so buyers receive current-generation Deca stock with full traceability rather than older TeSys D revisions being cleared through unauthorized channels.
Operating Principle of the TeSys Deca LC1D Contactor
Mechanically, the TeSys Deca LC1D operates on the same proven electromagnetic principle as its predecessor: an energized coil pulls a moving armature that closes three main power poles simultaneously, and spring return opens them cleanly on de-energization. What changes in the Deca generation is the termination technology – the patented Everlink® connection system, available on 40–65 A ratings, maintains constant clamping force on the conductor over time and temperature cycling, eliminating the periodic re-torquing that traditional screw terminals require in high-vibration or thermally cycled installations.
The Deca platform also carries multi-standard screw terminals compatible with flat, Phillips, and Pozidriv screwdrivers, reducing tooling friction for electricians working across mixed international equipment on the same site. Built-in 1 NO + 1 NC auxiliary contacts continue to provide direct confirmation of pole state to the control system, and the higher SCCR rating means the same physical contactor now tolerates greater short-circuit let-through energy without derating, a meaningful safety margin on sites with aging upstream protection.
Engineering Design of the TeSys Deca LC1D
Reviewing the TeSys Deca LC1D bill of materials, the TeSys Deca LC1D housing uses UL60335-compliant thermoplastics engineered for greater heat and fire endurance than the legacy TeSys D compound, while retaining the same compact 45–85 mm frame widths and DIN-rail or screw mounting so retrofits require no panel redesign. The coil compartment, auxiliary contact interface, and accessory mounting points are dimensionally compatible with the broader TeSys D accessory ecosystem, meaning existing stock of LADN auxiliary blocks, timer modules, and suppressor modules continues to fit.
Coil options span 24 V DC through 240 V AC on the Deca range, and the front label carries a clear model designation alongside a QR code linking to digital product documentation – a practical addition for maintenance teams verifying model and coil ratings during panel audits without pulling a paper datasheet. The overall design intent is straightforward: give panel builders every reason to standardize on Deca going forward without disrupting how a TeSys D-based panel is designed, wired, or serviced today.
Key Features
The TeSys Deca LC1D platform brings measurable upgrades over the legacy TeSys D range while preserving footprint compatibility, summarized below:
- Covers the same 9–95 A (AC-3) range as TeSys D, on an identical physical footprint for drop-in retrofit.
- Up to 100 kA SCCR rating provides greater short-circuit withstand margin than earlier-generation contactors.
- Everlink® termination on 40–65 A ratings maintains constant terminal clamping force without re-torquing.
- UL60335-compliant plastics deliver higher heat and fire endurance for demanding panel environments.
- Multi-standard screw terminals accept flat, Phillips, and Pozidriv drivers for faster field termination.
- Built-in 1 NO + 1 NC auxiliary contacts confirm pole state for interlocking and remote monitoring.
- Full accessory compatibility with the existing TeSys D auxiliary block, timer, and suppressor ecosystem.
- QR-coded front label links directly to digital datasheets for fast field verification.
Industrial Applications
Across Oman and the GCC, the TeSys Deca LC1D is increasingly the default specification for new motor control panels in district cooling plants, commercial building services, and water and wastewater treatment facilities in and around Muscat, where designers want the higher SCCR margin without changing established panel layouts. Its footprint compatibility with legacy TeSys D also makes it the natural replacement contactor when maintenance teams retrofit aging panels rather than fully re-engineering them.
As the officially authorized partner for Schneider Electric, Seven Star LLC distributes the TeSys Deca LC1D to EPC contractors and panel integrators serving the Sohar and Salalah economic zones, where new petrochemical and logistics facility builds specify current-generation contactor platforms as standard practice. The same range appears in hospitality and healthcare electrical rooms across the Sultanate, where the improved fire-endurance plastics offer a genuine safety margin in enclosed switchgear rooms.
Technical Specifications
The following table summarizes the key parameters of the TeSys Deca LC1D contactor range.
| Parameter | Specification |
|---|---|
| Model | LC1D09BD – LC1D95 (TeSys Deca range) |
| Rated Operational Current (AC-3) | 9 A to 95 A |
| Rated Operational Voltage | Up to 690 V AC |
| Short-Circuit Current Rating (SCCR) | Up to 100 kA |
| Poles | 3P (3 NO) |
| Auxiliary Contacts | 1 NO + 1 NC built-in (expandable) |
| Coil Voltage Range | 24 V DC – 240 V AC |
| Terminal Type | Screw clamp, Everlink® on 40–65 A ratings |
| Mounting | 35 mm DIN rail or screw fixing |
| Enclosure Material | UL60335-compliant, high heat/fire endurance thermoplastic |
| Standards | IEC 60947-4-1, UL 508, CSA C22.2 No.14 |
Call To Action
Panel builders and facility engineers in Oman and the GCC can request a formal RFQ for the TeSys Deca LC1D contactor directly from Seven Star LLC, with regional warehouse stock in Muscat and full technical datasheets available on request. As the authorized partner for Schneider Electric in Oman and the GCC, our instrumentation and automation division supports migration from legacy TeSys D to Deca and sizing for new panel builds – contact Seven Star LLC today to confirm availability and lead time.
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