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Reliance 45C959
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Reliance 45C922
Reliance 45C922
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Fireye 45UV5-1101
Fireye 45UV5-1101

Reliance 45C959

Product Name: Reliance Electric 45C959 — AC Contactor (Definite Purpose / Motor Control)

Product Overview: Higher-current variant in the 45C series. 3-pole definite purpose contactor for larger motor applications.

Category:
Description

Technical Specifications:

Parameter Value
Type Definite Purpose Contactor
Pole Configuration 3-pole (3P)
Coil Voltage 120V AC / 240V AC
Rated Current (AC-3) 40A at 480V AC
Rated Current (AC-1) 65A at 480V AC
HP Rating (AC-3, 480V) 20 HP
Auxiliary Contacts 1 NO + 1 NC
Enclosure Open (NEMA 1)
Mounting DIN rail or panel screw
Terminal Type Screw terminals (lug)
Life (Mechanical) 10,000,000 operations
Life (Electrical) 500,000 operations (AC-3)
Standards UL 508, CSA, IEC 60947-4-1

Functional Features:

  • Same features as 45C922 but higher current rating
  • Larger contact gap — better arc quenching at 40A
  • Reinforced coil bobbin — higher inrush current handling

Performance Parameters:

Metric Value
Operating Frequency 600 operations/hour (AC-3, 40A)
Coil Power ~7 VA (120V AC)
Contact Resistance <5 mΩ
Ambient Temp -40°C to +60°C

Applicable Industries: Large compressors, industrial fans, 20HP motors, chiller systems, mining equipment.

Installation Requirements:

  • Same as 45C922 but use 8 AWG Cu wire (40A circuit)
  • Ensure panel has adequate short-circuit rating (10kA minimum)
  • Derate at altitudes >2000m

Usage Notes:

  • 45C959 = 40A/20HP — do not substitute for 45C922 (25A/10HP) in undersized circuits
  • Verify coil voltage before energizing
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