Description

GE Multilin 369-HI: Your Substation’s Overcurrent Guardian

Let’s cut through the noise—this isn’t just another relay. The GE 369-HI handles brutal grid conditions where cheaper units tap out. I’ve seen it keep pulp mill motor feeders online during those nasty startup surges that’d make other relays cry. One plant manager in Alberta told me it reduced nuisance trips by 60% after they swapped out their aging Siemens units. Typically, you’ll want this when standard 5A CT inputs won’t cut it for high-current feeders.

Why It Stays Cool Under Pressure

• 20A continuous input rating – Handles those monster feeders without external shunts. Saved one Texas refinery $8k in avoided CT upgrades.
• Self-healing Ethernet port – From my experience, it auto-recovers from arc-flash-induced comms drops in under 200ms. No more manual reboots during storms.
• Real-time thermal modeling – Actually predicts cable burnout before it happens. One cement plant avoided a $200k motor replacement last winter.
• Tool-less terminal blocks – Swapped one out during a 15-minute outage window. Field techs love not fumbling with screwdrivers in cramped cabinets.

Hard Numbers You Can Trust

Specification	Details
Brand/Model	GE Multilin 369-HI-0-0-0-0
HS Code	8537.10.90 (Industrial control apparatus)
Power Requirements	88-264V AC/DC ±10%, 50/60Hz
Dimensions & Weight	190 x 144 x 122mm / 1.2kg
Operating Temperature	-40°C to +70°C (no derating)
Signal Inputs	5A or 20A CT inputs (switch-selectable)
Communication	Dual Ethernet (IEC 61850), RS-485 Modbus

Where It Earns Its Keep

This isn’t for your office building’s panel. You’ll find it guarding 34.5kV substation feeders in aluminum smelters where harmonic distortion would blind cheaper relays. One Midwest utility uses it on capacitor bank protection—they needed that 20A input for inrush currents during switching. Also common in offshore platforms where salt spray kills standard units; the conformal coating here seems to be holding up better than most.

Your Procurement Team Will Thank You

Look, I get it—budgets are tight. But swapping relays every 3 years costs more than this upfront. The 369-HI shares firmware with GE’s 650 series, so your techs won’t need retraining. In many cases, the Ethernet diagnostics cut commissioning time by half. And yes, it plays nice with legacy Modbus systems while giving you IEC 61850 for future-proofing. One plant avoided $15k in gateway costs just by using its dual protocols.

Keep It Running Smoothly

Mount it on standard 35mm DIN rail in NEMA 1 enclosures—no special brackets needed. Leave 50mm clearance above for airflow; I’ve seen units overheat when stuffed next to VFDs. Clean vents every 6 months in dusty mills (that flour plant in Kansas learned this the hard way). Firmware updates? Do them during outages—takes 8 minutes max. Skip the annual calibration if your CTs are stable; the self-test covers 90% of checks.

Certified Tough

CE, UL 508A, and IEC 60255-27 certified for harsh environments. RoHS compliant since 2020 models. Warranty’s 365 days from ship date—standard for GE protection gear. Oh, and delivery? Stock units ship in 1 week. Custom configs take up to 4 weeks, but we’ll FedEx it overnight once built. Payment’s 50% upfront, balance before shipping. No nasty surprises.