Phoenix EMG 22/25 Series Relay & Auxiliary Components Selection Guide: Precise Matching of Part Number, Model, and Application

Opening: Reliable Industrial Control Components – One-Stop Part Number & Model Reference

In industrial control cabinets, relay modules and matching auxiliary components (indicator lights, protective covers, buttons) are essential for circuit switching, status monitoring, and equipment protection. The Phoenix EMG 22 (relay modules) and EMG 25 (auxiliary accessories) series form a complementary product portfolio, featuring wide voltage adaptation, flexible contact configurations, and seamless compatibility. Designed for harsh industrial environments, these components support stable operation in temperature ranges of -20°C to +50°C, with screw terminal connections for secure wiring. This guide integrates part number-model correspondence, core technical parameters, and scenario-specific recommendations to simplify selection and procurement, helping you quickly lock in optimal control system components.

I. Core Advantages: Why Choose the Phoenix EMG 22/25 Series?

• Dual-series complementarity: EMG 22 relay modules cover AC/DC voltages (24V, 120V, 230V) and diverse contact configurations (single/double normally open), while EMG 25 auxiliary components (indicator lights, protective covers, buttons) are customized for matching installation.
• Industrial-grade durability: Corrosion-resistant materials, anti-vibration design, and compliance with IEC industrial standards, suitable for factory floors, HVAC systems, and control panels.
• Flexible installation: DIN rail-mounted relay bases, snap-on auxiliary components, and compatibility with standard 25mm-wide control cabinet layouts, reducing installation time.
• Clear functional identification: Model suffixes indicate key specifications (voltage, contact type, accessory type), enabling quick parameter confirmation.
• Secure connection: Screw terminals compatible with 0.2-2.5mm² wires, ensuring reliable contact even in high-vibration environments.

II. Complete Product Series Selection Table (Part Number + Model + Core Information)

1. EMG 22 Series: Relay Modules (Core Control Components)

Designed for circuit switching, signal amplification, and safety interlocking, supporting multiple voltage and contact configurations.

2. EMG 25 Series: Auxiliary Components (Matching EMG 22/25 Bases)

Including indicator lights, protective covers, and buttons, designed to enhance system visibility, protection, and operability.

III. 3-Step Quick Selection Technique (Easy for Beginners)

Step 1: Distinguish Product Series

• Circuit switching needs: Select EMG 22 series relay modules (e.g., 2951885) for signal amplification, load switching, or interlocking.
• Status monitoring/protection/operation: Select EMG 25 series auxiliary components (e.g., indicator lights 2943000, protective covers 2947132, buttons 2948335).

Step 2: Select EMG 22 Relay Key Parameters

• Control Voltage:
  • Automation systems: 24DC (e.g., 2951885, 2950394).
  • Mains power: 230AC (e.g., 2952855, 2940760) or 120AC (North America → 2953964).
• Contact Configuration:
  • Single-circuit switching: 21 (normally open) or 21AU (special normally open) (e.g., 2951885).
  • Dual-circuit switching: 21-21 (dual normally open) (e.g., 2950323).
• Mounting/Accessories:
  • Compact cabinets: TRP/TRN series brackets (e.g., TRN35 → 2952350).
  • Custom terminals: SO46 terminal (e.g., 2940061).

Step 3: Select EMG 25 Auxiliary Components

• Indicator lights: Need status visibility → 2943000 (LG/SET) for relay activation/power indication.
• Protective covers: Need dust protection/identification → 7.5mm transparent (2947132) for general use, 52mm green (2947145) for safety marking.
• Manual operation: Need manual control → 2948335 (B4 pushbutton) for equipment start/stop.

IV. Recommended Industry-Scenario Combinations (Ready-to-Use)

V. Selection Pitfall Avoidance Guide (Common Mistakes to Note)

1. Voltage mismatch: EMG 22 relay voltage does not match system power (e.g., 24DC relay used with 230AC) → Confirm voltage in model (24/120/230) to avoid burnout.
2. Contact configuration error: Single-circuit needs using dual-circuit relays (or vice versa) → Select 21 (single) or 21-21 (dual) based on circuit count.
3. Auxiliary component compatibility: EMG 25 accessories used with non-25 series bases → Ensure accessories are compatible with EMG 22/25 bases (not for other series).
4. Mounting space neglect: Compact cabinets using standard brackets → Choose TRN12/TRN5 (2952363) for ultra-compact installation.
5. Protective cover size mismatch: Selecting 52mm cover for small modules → 7.5mm (2947132) for standard modules, 52mm (2947145) for large bases.
6. Terminal type oversight: Custom terminal layouts ignoring SO46 suffix → Select SO46 models (2940061) for special terminal requirements.

Conclusion: Select the Right EMG Components for Reliable Industrial Control

The Phoenix EMG 22/25 series provides complementary solutions for industrial control systems, with EMG 22 relays covering diverse voltage and switching needs, and EMG 25 auxiliary components enhancing visibility, protection, and operability.