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Phase and Voltage Monitoring Relay 3 Phase 380V NJYB3 Chint

BRAND: CABAC
SKU: 636019
$164.80 List price: $219.80
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Chint NJYB3 voltage relay 380V features phase loss and sequence protection, over and undervoltage monitoring, and PTC input. Ideal for 3 phase motor protection.

Alternatively Known As: CHINT NJYB3 Phase Monitoring Relay, Three-Phase Voltage Monitoring Relay, Phase Failure Relay, Motor Protection Relay

Technical Specifications
  • Rated System Voltage: AC 380–415 V, three-phase three-wire
  • Measurement Range: 260–480 V for 380 V systems
  • Frequency: 50 Hz/60 Hz
  • Protection Functions: Phase loss, phase sequence, voltage imbalance, overvoltage, undervoltage and PTC temperature protection
  • Overvoltage Setting: Adjustable from 1.05–1.30 x Us, or fixed 120% depending on variant
  • Undervoltage Setting: Adjustable from 0.70–0.95 x Us, or fixed 80% depending on variant
  • Voltage Imbalance Setting: Adjustable from 5–15%, or fixed 20% depending on variant
  • Operating and Reset Delay: Adjustable from 0.1–10 seconds
  • Output Contact: One changeover contact, 1NO/1NC
  • Contact Rating: AC-15 240 V/0.75 A and 415 V/0.47 A; Ith 3 A
  • Mounting: DIN rail or panel mounting
  • Protection Rating: IP20 terminals and IP40 housing
  • Electrical Life: At least 100,000 operations
  • Mechanical Life: At least 1,000,000 operations
  • Product Standard: IEC/EN 60947-5-1
  • Dimensions (H x L x W): 91mm x 66.2mm x 35.8mm
  • Weight: 0.15 kg
Key Features
  • Monitors three-phase voltage on 380–415 V systems
  • Detects phase failure and incorrect phase sequence
  • Provides adjustable overvoltage, undervoltage and voltage imbalance protection
  • PTC input supports motor temperature protection on compatible variants
  • Adjustable operating and reset delay times from 0.1–10 seconds
  • Changeover relay output for contactor and control-circuit interfaces
  • LED status indication for power and protection conditions
  • Suitable for motor control panels, industrial automation and HVAC equipment
Professional Installation Requirements
  • Installation and connection to three-phase mains should be performed by a licensed electrician in accordance with AS/NZS 3000, the product instructions and applicable electrical safety requirements. Use a suitably rated contactor where the relay is used for motor isolation or control.
Applications
  • Three-phase motor protection
  • HVAC and refrigeration plant control panels
  • Industrial automation and machinery control systems
  • Power distribution and switchboard control circuits
  • Protection of pumps, fans, compressors and other three-phase loads
Standards & Compliance
  • AS/NZS IEC 60947.5.1 for control circuit devices and switching elements is the applicable Australian/New Zealand standard family for this relay category
  • Australian installation and wiring must comply with AS/NZS 3000 and applicable EESS/RCM requirements
Environmental Benefits
  • Helps prevent motor damage and premature equipment replacement caused by abnormal voltage conditions
  • Supports longer service life for motors, contactors and connected equipment
  • Low-power electronic monitoring can help avoid unnecessary operation during phase or voltage faults
  • Electronic components and metal terminals may be recoverable through appropriate electrical-equipment recycling streams
Warranty Information

CHINT warranty policy provides 27 months from the date of manufacture for other low-voltage apparatus sold through authorised channels, subject to the applicable sales contract and warranty conditions.

Available Now

Available through authorised CHINT distributors in Australia.

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