Siemens 3RT1024-3AP00 SIRIUS Power Contactor, AC-3 5.5kW/400V, Coil 230VAC 50Hz, Size S0 45mm

Overview: The Siemens 3RT1024-3AP00 is a SIRIUS 3-pole power contactor (size S0) designed for motor switching and general-purpose loads. It features a 230 V AC, 50 Hz coil and supports AC-3 duty up to 5.5 kW at 400 V. The unit provides robust performance with IP20 protection on the front and terminals, long mechanical life, and tool-less DIN-rail/screw mounting for panel applications.

Key Features:

• 3-pole main circuit with AC-3 motor duty 5.5 kW at 400 V
• 230 VAC, 50 Hz coil; operating range factor 0.8 … 1.1 (at 50 Hz)
• High mechanical endurance: up to 10,000,000 switching cycles (typical)
• IP20 protection (front and terminals); pollution degree 3
• Compact S0 size: 45 mm width; DIN EN 50022 35 mm rail/screw mounting
• Side-by-side mounting capability
• Verified contact reliability for auxiliary contacts (1 faulty switching per 100 million at 17 V, 1 mA)
• Short-circuit coordination with gL/gG fuses (per type of assignment)

Technical Specifications:

• Main circuit:
  • Poles: 3; Main contacts: 3 NO, 0 NC
  • AC-3 at 400 V: 12 A; Rated motor power at AC-3, 400 V: 5.5 kW
  • AC-4 at 400 V: 12.5 A
  • AC-1 operating current: up to 40 A (400 V, 40 °C); up to 40 A (≤690 V, 40 °C); 35 A (≤690 V, 60 °C)
  • Active power loss at AC-3 400 V per conductor: 0.5 W
• DC utilization (per datasheet series paths):
  • 1 path: DC-1 35 A @24 V, 4.5 A @110 V; DC-3/DC-5 20 A @24 V, 2.5 A @110 V
  • 2 paths in series: DC-1 35 A @24/110 V; DC-3/DC-5 35 A @24 V, 15 A @110 V
  • 3 paths in series: DC-1 35 A @24/110 V; DC-3/DC-5 35 A @24/110 V
• Control circuit:
  • Coil: AC 230 V, 50 Hz; operating range factor 0.8 … 1.1 (50 Hz)
  • Voltage type: AC
• Auxiliary circuit:
  • Auxiliary contacts (instantaneous): 0 NO / 0 NC (base device)
  • AC-15: 6 A @230 V; 3 A @400 V
  • Contact reliability: 1 faulty switching per 100 million (17 V, 1 mA)
• Short-circuit protection (gL/gG fuses):
  • Main circuit, assignment 1: 63 A; assignment 2: 25 A
  • Auxiliary circuit: 10 A
• Protection and environment:
  • Protection class: IP20 (front, terminals)
  • Degree of pollution: 3
  • Ambient temperature (operation): -25 … +60 °C
  • Installation altitude: ≤ 2000 m
• Mounting and size:
  • Mounting: screw and snap-on to 35 mm DIN rail (EN 50022); side-by-side mounting: Yes
  • Size: S0
  • Dimensions (H x W x D): 85 x 45 x 90 mm
  • Terminals: main circuit screw-type; auxiliary/control circuit Cage Clamp terminals
  • Main contact wiring: solid 2x (1…2.5 mm²), 2x (2.5…6 mm²), max 2x 10 mm²; AWG 2x (16…12), 2x (14…10), 1x 8
  • Auxiliary wiring: solid 2x (0.25…2.5 mm²); fine-stranded with/without ferrule per datasheet; AWG 2x (24…14)
• Mechanical service life (typical):
  • Contactor: 10,000,000 switching cycles
  • With electronics-compatible aux block: 5,000,000
  • With aux switch block: 10,000,000

Applications:

• Motor control (AC-3 duty) up to 5.5 kW at 400 V
• General-purpose switching (AC-1) up to 40 A
• Panel building for industrial automation, HVAC, pumps, conveyors
• Installations requiring compact S0 footprint with DIN-rail or screw mounting