GIC 17B122AA0 Current Monitoring Relay is a 3-phase current monitoring relay designed for motor protection on 220-415 V AC (3-phase, 3-wire) supplies. It provides definite-time overload protection with underload and phase fault monitoring, with adjustable start and trip delays for stable machine control.
🔧 Technical Highlights:
- Supply voltage: 220-415 V AC (3-phase, 3-wire), 50/60 Hz
- Supply variation: -20% to +15% of nominal
- Power consumption: 12 VA (max.)
- Trip type: Definite time
- Sensing current range: 3-9 A
- Thermal memory: N/A (definite-time model)
- Underload setting: 50%
- Phase protections: Phase loss (70% of unbalance), current unbalance protection (50% of unbalance), phase sequence/reverse (approx. 100 ms)
- In-built CTs: 2
- Reset modes: Auto or manual
- Test function: Yes
- Start time setting: 0.2 to 30 s
- Trip delay time setting: 0.2 to 10 s
- Auto reset time: 6 min
- On delay: 450 ms ± 50 ms
- Setting accuracy: ± 5%
- Repeat accuracy: ± 2%
- Output: 1 C/O relay
- Contact rating: 5 A at 240 V AC (resistive)
- Utilization category: AC-15 (Ue 120/240 V, Ie 3.0/1.5 A)
- LED indications: Phase asymmetry, phase loss, phase sequence/reverse, power ON, underload, overload
- Enclosure: IP20, UL94-V0
- Mounting and size: Base mount, 110 x 36.5 x 76.8 mm, approx. 210 g
- Environment: -10°C to +60°C operating, -25°C to +70°C storage, 95% RH non-condensing
- Compliance: CE, RoHS
✅ Benefits:
- Helps protect 3-phase motors by tripping on overload and underload conditions
- Monitors phase loss, phase sequence/reverse and current unbalance for safer operation
- Definite-time start and trip delay settings help reduce nuisance tripping during startup
- Auto/manual reset and test function support maintenance and fault finding
- Compact base-mount format suits control panels and MCC assemblies
🚀 Applications:
- 3-phase motor protection in control panels and MCCs
- Pumps, fans, compressors and conveyors
- HVAC plant and refrigeration equipment
- Packaging, material handling and general automation machinery
- Installations where phase faults or unbalanced loading are a risk
Reliable definite-time current and phase monitoring for consistent 3-phase motor protection.
FAQs
- Q: What supply does the 17B122AA0 require?
A: It is powered from 220-415 V AC, 3-phase (3-wire) at 50/60 Hz. - Q: What can I adjust on the definite-time model?
A: You can set a start delay (0.2 to 30 s) and a trip delay (0.2 to 10 s), plus underload at 50%, with auto or manual reset (auto reset time 6 minutes).