high voltage relay NT90TP2NBS12SB 50A

Product Overview

The NT90TP series high voltage relays (models including NT90TP2NBS12SB 50A, NT90TPNAE120CB, NT90TPNCD220CF 0.9W, and NT90TPNAE240CB) are engineered for demanding high-current and high-voltage switching in industrial automation, power distribution, renewable energy, and heavy machinery. These relays feature SPST-NO (1 Form A) or SPDT (1 Form C) configurations with continuous current ratings up to 50A at 28V DC / 250V AC, and coil voltages from 12V DC to 240V AC/DC with ultra-low power consumption (0.9W typical). As part of YM's extensive relay portfolio—which includes Industrial Power Relay, Military Metal Relay, PCB Board Relay, Automotive Relay, and Solid State Relay—the NT90TP series delivers robust performance, high dielectric strength (4,000V RMS), and long electrical life for mission-critical circuits.

Technical Specifications

The NT90TP series is available in multiple coil voltage and contact configuration variants. Key parameters:

• Available Models & Coil Data:
  • NT90TP2NBS12SB: 12V DC coil, 50A SPST-NO
  • NT90TPNAE120CB: 120V AC coil, 0.9W, 30A/40A SPST-NO
  • NT90TPNCD220CF: 220V AC/DC coil, 0.9W, 30A SPDT
  • NT90TPNAE240CB: 240V AC coil, 0.9W, 30A SPST-NO
• Contact Arrangement: SPST-NO (1 Form A) or SPDT (1 Form C) depending on model
• Contact Rating (Resistive): 30A–50A at 28V DC / 250V AC (model dependent)
• Low-Level Signal Capability: (10-50)μA at (10-50)mV for 100,000 cycles
• Contact Resistance: Initial ≤50mΩ; after life test ≤200mΩ
• Operate Time: ≤15ms (typical ≤10ms)
• Release Time: ≤10ms
• Dielectric Strength (Coil to Contacts): 4,000V RMS (high voltage isolation)
• Insulation Resistance: >500 MΩ (500V DC)
• Mechanical Life: 10 million operations minimum
• Electrical Life: 100,000 operations at rated load
• Operating Temperature: -40°C to +85°C
• Weight: Approx. 30–35 grams
• Sealing: Flux-tight standard; hermetic sealing optional (leakage ≤1.0×10⁻³ Pa·cm³/s)

All specifications validated at 25°C. Custom coil voltages and contact materials available.

Product Features & Competitive Advantages

1. High Current Capacity (50A): Capable of switching heavy loads such as motors, compressors, heaters, and battery banks – reduces system complexity and component count.
2. Wide AC/DC Coil Range: Supports 12V DC, 120V AC, 220V AC/DC, and 240V AC coils, enabling direct integration with industrial control systems, PLCs, and building automation.
3. Ultra-Low Coil Power (0.9W): Minimizes heat generation and energy consumption, allowing direct drive from logic circuits without external amplification.
4. High Dielectric Strength (4,000V RMS): Ensures safe isolation between control and load circuits, critical for high-voltage applications like solar inverters, UPS, and power supplies.
5. Long Electrical & Mechanical Life: 100,000 electrical cycles at rated load and 10 million mechanical cycles reduce maintenance and replacement costs.
6. Optional Hermetic Sealing: Leakage rate ≤10⁻³ Pa·cm³/s provides protection against moisture, dust, and corrosive atmospheres, suitable for outdoor and industrial control panels.

Installation & Wiring Steps

1. Model Selection: Verify coil voltage (DC or AC) and contact configuration (SPST-NO or SPDT) against your system requirements. For 50A applications, ensure the model suffix indicates 50A rating.
2. PCB Mounting: Insert relay into pre-drilled PCB holes according to the pinout diagram. Ensure correct orientation (usually marked by a polarity notch). Solder at ≤350°C for ≤3 seconds per pin. For high-current models, consider using thicker PCB traces or external wiring.
3. Coil Connection: Connect coil terminals to the appropriate control voltage. For AC coils, polarity is not required; for DC coils, observe polarity if a suppression diode is integrated (check datasheet).
4. Load Wiring: For SPST-NO, connect power source to the input terminal (common) and load to the normally open (NO) terminal. Use wire gauge suitable for 50A (minimum 8 AWG or 10 mm²). For SPDT, also connect the normally closed (NC) terminal if needed.
5. Functional Test: Apply coil voltage – verify continuity (low resistance) between input and NO terminals. Remove voltage – verify open circuit (infinite resistance). Measure contact resistance to confirm ≤50mΩ.
6. Integration with Sensors: For automated protection, pair the relay with Aviation Temperature Sensor, Hydraulic Circuit Breaker, or Military Pressure Sensor for temperature/pressure-based cut-off.

Application Scenarios

The NT90TP series relays are deployed in high-power switching applications across multiple industries:

• Industrial Automation: Motor contactors, conveyor systems, solenoid valve drivers (compatible with Aviation Cold Air Solenoid Valve), and industrial oven heating elements.
• Power Distribution & UPS: Emergency power transfer, inverter bypass relays, battery bank isolation, and DC power distribution panels.
• Renewable Energy: Solar charge controller load disconnect, wind turbine brake control, energy storage system switching, and EV charging stations.
• HVAC & Refrigeration: Compressor start relays, fan speed control, defrost heater switching, and heat pump controls.
• Automotive & Heavy Equipment: High-power lighting, winch control, auxiliary battery isolators, and electric vehicle battery management systems.
• Test & Measurement: Load switching for power supplies, electronic loads, and automated test equipment requiring high current.

Value Proposition for B2B Buyers

• Enhanced System Safety: High interrupting capacity (50A) and 4,000V isolation reduce arc flash risk and protect sensitive control circuits from voltage transients.
• Longer Operational Life: 100,000-cycle electrical life at full load lowers total cost of ownership and reduces unplanned downtime.
• Energy-Efficient Coil: Only 0.9W coil power minimizes heat dissipation and allows direct control from microcontrollers or PLC outputs without additional drivers.
• Global Compliance: Manufactured under ISO 9001:2015, RoHS, REACH; UL and TUV certifications available upon request, simplifying end-product approval.
• Flexible Customization: YM offers custom coil voltages, contact materials (AgSnO₂ for high current), sealing levels (hermetic), and terminal styles (PCB pins, quick-connect, screw) for OEM projects.

Certifications & Compliance

The NT90TP series relays are designed to meet international standards for industrial power relays. Our facility operates under ISO 9001:2015 quality management. Key compliance includes:

• IEC 61810-1 – Electromechanical elementary relays
• UL 508 – Industrial control equipment (selected models)
• TUV EN 61810-1 – Safety standard (available on request)
• RoHS 2011/65/EU – Restriction of hazardous substances
• REACH (EC 1907/2006) – Chemical compliance

Each relay is 100% tested for coil resistance, pickup/dropout voltage, contact resistance (≤50mΩ), dielectric strength (4,000V RMS), and insulation resistance (>500 MΩ). Traceability codes are laser-marked on the housing.

Customization Options

YM provides extensive OEM/ODM customization for the NT90TP series to meet specific application requirements:

• Coil Voltage: Custom AC or DC voltages (6V, 24V, 48V, 110V, 220V, etc.) with adjustable power consumption.
• Contact Material: Silver-tin oxide (standard for 50A), silver-cadmium oxide (for inductive loads), or gold-plated (for low-level signals).
• Contact Configuration: SPST-NO, SPST-NC, SPDT, or DPST.
• Sealing Level: Flux-tight (standard), washable, or hermetic sealing (≤10⁻³ Pa·cm³/s).
• Terminal Style: PCB pins, quick-connect tabs (6.3mm/4.8mm), screw terminals, or wire leads.
• Special Markings: Private labeling, custom part numbers, and bulk/tube packaging.

Production Process & Quality Assurance

1. Incoming Material Inspection: Coil wire, contact metals, cores, and housings are certified and sampled for compliance with specifications.
2. Precision Coil Winding: Automated winding machines ensure consistent resistance (±5%) and insulation integrity.
3. Contact & Armature Assembly: High-precision assembly of moving and stationary contacts, springs, and armatures in a clean-room environment. For 50A models, enlarged contact tips and arc chambers are used.
4. Calibration: Pickup/dropout voltage and contact follow are set to datasheet limits using automated test equipment.
5. 100% Functional Testing: Every relay undergoes coil resistance, operate/release time, contact resistance (≤50mΩ), dielectric strength (4,000V RMS), and insulation resistance testing.
6. Life Cycle Sampling: Statistical sampling for electrical life (100,000 ops at rated load) and mechanical life (10 million ops).
7. Sealing Test (Hermetic versions): Helium mass spectrometry verifies leakage rate ≤10⁻³ Pa·cm³/s.
8. Final Visual & Packaging: Laser marking of model, date code, current rating, and lot number. Packaged in anti-static tubes or bulk boxes for automated assembly.