Relay Control
Featured Switchgear & Automation Lines
Engineered for High-Frequency Grid-to-Generator Transition
Tested under rigorous switching cycles, thermal stress, and wide voltage fluctuation profiles typical of Syrian industrial and municipal distribution boards.
7-Day Digital
Bluetooth IoT
Industrial DIN
Smart Control
35mm Mount
Core Dual ATS
Solar & Inverter
24+
Years Manufacturing Experience
5,700m²
TÜV Audited Floorspace
92
Certified Technical Staff
US$3.3M
Verified Annual Export Volume
Engineering Whitepaper & Field Realities
Mitigating Severe Grid Instability in Homs Governorate
An authoritative technical evaluation of dual-power failover dynamics under extreme load shedding, asymmetric phases, and widespread photovoltaic hybridization across central Syria.
The 'Amperat' Neighborhood Generator Failover
Across urban quarters like Al-Zahra, Bab al-Sbaa, and Khalidiya, private diesel micro-generators (the "Amperat" communal system) supply 2A to 16A quotas during prolonged municipal outages. Conventional changeover knife switches cause dangerous electrical arcs and severe phase-to-phase shorts.
Our TOQ3 PC/CB-class automatic transfer switches provide precise interlock mechanisms and millisecond transfer speeds, preventing cross-conduction between unstable municipal grids and neighborhood diesel sources.
Key Parameter: Interlocking isolation prevents phase collisions during sudden municipal recovery.
Photovoltaic & Off-Grid Hybrid Micro-Plants
With municipal electricity constrained to 2–4 hours per 24-hour cycle, rooftop solar PV paired with lithium and tubular lead-acid batteries represents the primary survival infrastructure for workshops, clinics, and residences in Homs.
The integrated ATS dynamically synchronizes PV inverter AC-out with secondary backup lines. Silver-alloy contacts (AgNi/AgCdO) prevent contact pitting caused by inductive inverter inrush currents and fluctuating frequency curves during source changeover.
PV Advantage: Compatible with single-phase 220V and three-phase 380V/400V inverter topologies.
Hasyaa Industrial City Heavy Duty Switchgear
The Hasyaa Industrial Zone south of Homs hosts food packaging plants, textile spinning mills, and plastics extrusion factories. Continuous motor loads and refrigeration demand uninterruptible 4-Pole switching.
Our heavy-duty ATS switchgear integrates 4-Pole switching to completely isolate the generator neutral conductor, eliminating floating neutral hazards, harmonics, and residual circulating ground currents that destroy delicate electronic VFD drives.
Critical Feature: 4P True Neutral Isolation protecting automated PLC process lines.
Dual Power ATS Engineering Matrix: PC Class vs. CB Class for Syrian Field Installation
| Engineering Parameter | PC Class ATS (TMB Specialized) | CB Class ATS (Circuit Breaker Type) | Syrian Field Deployment Relevance |
|---|---|---|---|
| Internal Architecture | Integrated electromagnetic drive with mechanical lock | Dual MCB / MCCB mechanisms linked via mechanical trip bar | PC class avoids nuisance thermal tripping caused by ambient 45°C summer heat in Homs. |
| Switching Speed | Ultra-fast: 30ms to 50ms transfer interval | Standard: 80ms to 150ms transfer interval | PC class maintains IT infrastructure, router bridges, and medical monitors without rebooting. |
| Short-Circuit Withstand (Icw) | High withstand capacity (up to 10kA-18kA) | Limited by internal miniature circuit breaker rating | Crucial for substation feeders subject to harsh fault currents upon public grid re-energization. |
| Neutral Pole Switching | Overlapping neutral or simultaneous switched 4P | Standard switched neutral 4P | Prevents neutral voltage shift and equipment burnout on unbalanced 3-phase suburban grids. |
| Durability (Mechanical/Electrical) | 10,000 cycles mechanical / 6,000 cycles electrical | 8,000 cycles mechanical / 3,000 cycles electrical | With 6-10 power transfers daily in Homs, PC class guarantees multi-year maintenance-free lifespan. |
Direct China Manufacturer
Zhejiang TMB Electric Co., Ltd. — Liushi Industrial Origin
Operating directly from Huabei Village, Liushi Town, Wenzhou—China's universally recognized epicenter of low-voltage electrical manufacturing—Zhejiang TMB Electric Co., Ltd. has dedicated over two decades to developing world-class circuit breakers, DC solar protection gear, and automatic transfer switches.
Our proximity to primary copper stamping facilities, silver metallurgy foundries, and fire-resistant polymer synthesis labs ensures uncompromised raw material purity and agile OEM/ODM manufacturing capability.
- TÜV Rheinland On-Site Verified: Complete workshop audit validating 5,700m² manufacturing facility and advanced QC assembly stations.
- High-Purity Silver Alloy Contacts: Engineered with AgCdO/AgSnO2 compound contact plates guaranteeing anti-welding under heavy load short circuits.
- Syria-Optimized Low MOQs: Accessible trial order thresholds starting from 5 pieces to support engineering contractors and local electrical importers.
- Full International Conformity: Rigorously certified under CE standards, conforming to IEC 60947-6-1 and GB/T 14048.11 transfer switch specifications.
Procurement & Technical FAQ
Essential Guidance for Specifiers and Importers in Homs
Clear, unvarnished engineering answers resolving typical installation challenges, logistics, and power system harmonization across Syria.
Why is 4-Pole (4P) ATS required instead of 3-Pole (3P) in Homs?
In municipal Homs networks, grid neutral conductors are often shared, floating, or poorly grounded during outages. When switching between a private generator or solar hybrid inverter and the public utility, a 3P switch maintains a solid neutral connection. If the municipal neutral drifts or carries stray earth fault current, it creates hazardous floating voltages up to 380V on 220V appliances. A 4-Pole ATS completely isolates the neutral line, protecting sensitive equipment from catastrophic burnout.
How does the ATS handle severe under-voltage brownouts (e.g., 140V-160V)?
The public grid in Homs often sags to 140V–170V before collapsing completely. Standard ATS coils powered directly from line voltage may chatter, burn out, or fail to latch properly. TMB dual-power automatic transfer switches can be paired with our adjustable over/under-voltage protection modules (TOVPD series) to establish a defined cut-off window (e.g., disconnect if below 175V or above 265V), ensuring the switch only transfers to the alternative power source when voltage quality is verified.
Can TMB provide customized OEM brand labeling for Syrian distributors?
Yes. Zhejiang TMB Electric Co., Ltd. provides comprehensive OEM/ODM services for established electrical trading houses in Damascus, Aleppo, and Homs. This encompasses custom laser-etched front fascias, bespoke Arabic/English technical instruction manuals, customized packaging cartons, and modified rated operational currents (In) calibrated specifically for standard Syrian distribution board cutouts.
What is the transit route and container shipping lead time from Ningbo to Syria?
From our factory in Liushi, cargo moves directly to Ningbo or Shanghai Port. Typical maritime transit to the Port of Latakia (Syria) or transshipment via Beirut Port (Lebanon) takes approximately 28 to 38 days depending on the shipping line schedule. We provide complete commercial documentation, packing lists, CE declarations, and Certificate of Origin (CO) legalization required for Syrian customs clearance.
Direct Engineering Inquiries for Projects in Homs
Whether you require single-line diagram analysis, bulk wholesale pricing for electrical distribution projects, or custom ATS sample evaluations, our technical engineering team in Liushi is ready to assist.