Description
1. Unboxing & Physical Snapshot
- Model & Brand: General Electric (GE) Spectra Series — Molded Case Circuit Breaker (
SGLA36AT0400). - Physical Dimensions: Approximately 346mm x 139mm x 140mm (standard SGLA frame profile).
- Estimated Shipping Weight: 6.3 kg (robust industrial molded resin housing with high-density internal microelectronic solid-state trip units).
- What’s in the Box: 3-pole circuit breaker assembly, rating plug module, line/load terminal lug hardware, auxiliary connection terminals, and factory calibration compliance paperwork.
2. Product Introduction
Architecture hook: Mounting directly into industrial switchboards and distribution panelboards, this high-capacity molded case circuit breaker manages primary feeder protection against severe overloads and short-circuit faults. The heavy-duty insulating resin composite enclosure shields internal arc-quenching chambers and electronic trip mechanisms from aggressive electrical noise and mechanical stress.
Operating within critical industrial power distribution grids, the unit utilizes advanced solid-state sensing to process phase currents dynamically. Plant reliability engineers depend on its precise time-current curve coordination to isolate downstream faults selectively, which is vital for preventing catastrophic equipment damage and unplanned facility outages.
3. Core Technical Specifications
| Parameter | Value |
| Circuit Breaker Type | Spectra Series Molded Case Circuit Breaker (MCCB) |
| Amperage Rating | 400 A frame configuration (AT0400) |
| Number of Poles | 3-Pole configuration |
| Voltage Rating | 600 V AC maximum operating voltage |
| Interrupting Capacity | 65 kAIC at 480 V AC |
| Trip Unit Technology | Microprocessor-based solid-state LSI trip unit |
4. Global Compliance & Industry Certifications
- Regulatory Approvals: CE Mark, UL/cUL Listed under UL 489 standards for molded case circuit breakers, and CSA certification.
- Safety Directives: Conforms to heavy industrial electrical safety and short-circuit coordination directives.
- Compliance Significance: The UL 489 listing ensures that internal thermal-magnetic and solid-state interruption barriers withstand severe fault energy levels without casing rupture or progressive arc-tracking.
- Audit Note: Verify specific lot certifications and trip unit curve settings with OEM documentation prior to final switchboard commissioning.
5. Long-Term Storage & Asset Preservation Guide
When storing high-capacity circuit breakers in warehouse inventory, prioritize contact preservation and moisture prevention. Keep the unit sealed inside heavy-duty anti-static barrier packaging together with active molecular sieve desiccant packs to prevent oxidation on terminal surfaces.
Maintain warehouse storage relative humidity strictly below 60% to protect internal electronic trip components and mechanical trip latches. Store the breaker in an upright position on a vibration-damped surface to prevent internal mechanism alignment shifts.
6. Physical Installation Prerequisites
- Switchboard Clearance: Ensure adequate phase-to-phase and phase-to-ground clearance within the panel enclosure to prevent flashover during heavy switching events.
- Terminal Torque Specifications: Fasten all line and load copper busbar connections using a calibrated torque wrench to exact manufacturer specifications to eliminate high-resistance joint heating.
- Mounting Security: Bolt the circuit breaker frame securely onto the distribution panel mounting rails using grade-certified hardware to withstand electromechanical magnetic forces during short-circuit clearing.
7. Buyer’s FAQ (Logistics & Compliance Focus)
- Q: What Harmonized System (HS) Tariff Code governs global customs entries for this circuit breaker?
- A: Generally classified under HS code 8536.20 (Automatic circuit breakers for a voltage not exceeding 1,000V); verify precise schedules with your customs broker.
- Q: Does this circuit breaker ship pre-configured with trip curve settings?
- A: The unit arrives with baseline factory settings; specific long-time, short-time, and instantaneous (LSI) trip thresholds must be adjusted on-site using the installed rating plug to match coordination studies.
- Q: How does the Country of Origin (COO) documentation impact regional import taxes?
- A: Manufactured primarily in the United States, the official COO document establishes eligibility for preferential regional trade agreements; request paperwork prior to freight dispatch.
- Q: What specialized transport insurance protects this heavy electrical asset?
- A: Secure comprehensive “All-Risk” logistics insurance accompanied by shock-watch and tilt indicator labels affixed to the exterior shipping crate.
- A: Secure comprehensive “All-Risk” logistics insurance accompanied by shock-watch and tilt indicator labels affixed to the exterior shipping crate.
