Phoenix EMG 10-REL/KSR Series: Industrial Relay Modules - Selection Guide
Product Overview
The Phoenix EMG 10-REL/KSR Series are rugged industrial relay modules designed for reliable switching control in automation systems. Covering a wide range of control voltages (24V/48V/60V/120V/230V AC/DC) and contact configurations (1-channel, 2-channel, 21-channel changeover), they enable precise control of industrial loads such as motors, solenoid valves, and actuators. With industrial-grade construction, optional gold-plated contacts (AU), and DIN rail mounting, these modules are ideal for manufacturing lines, process control, and power distribution scenarios requiring stable and durable switching performance.
Model Quick Reference Table
| Model No. | Product Name | Control Voltage | Contact Configuration | Special Features | Application Scenarios |
|---|---|---|---|---|---|
| 2941400 | EMG 10-REL/KSR-G 60/1-LC AU | 60V | 1 Normally Open (NO) | Gold-plated contacts (AU), Standard (LC) | 60V system 1-channel precision control |
| 2941303 | EMG 10-REL/KSR-G 60/1-LC | 60V | 1 NO | Standard (LC) | 60V system 1-channel general control |
| 2964225 | EMG 10-REL/KSR-G 48/21-LC AU | 48V | 21 Changeover (1CO) | Gold-plated contacts (AU) | 48V system 21-channel mixed control |
| 2942111 | EMG 10-REL/KSR-G 24/2-LC | 24V | 2 NO | Standard (LC) | 24V system 2-channel parallel control |
| 2940359 | EMG 10-REL/KSR-G 24/21-LCU | 24V | 21 Changeover (1CO) | LED Indicator + Auxiliary Contact (LCU) | 24V system 21-channel control with status monitoring |
| 2940090 | EMG 10-REL/KSR-G 24/21-LC AU | 24V | 21 Changeover (1CO) | Gold-plated contacts (AU) | 24V system 21-channel precision control |
| 2942153 | EMG 10-REL/KSR-G 24/21-LC | 24V | 21 Changeover (1CO) | Standard (LC) | 24V system 21-channel general control |
| 2940346 | EMG 10-REL/KSR-G 24/2-LCU | 24V | 2 NO | LED Indicator + Auxiliary Contact (LCU) | 24V system 2-channel control with status monitoring |
| 2940126 | EMG 10-REL/KSR-G 24/2-LC AU | 24V | 2 NO | Gold-plated contacts (AU) | 24V system 2-channel precision control |
| 2942807 | EMG 10-REL/KSR-G 24/1-LCU | 24V | 1 NO | LED Indicator + Auxiliary Contact (LCU) | 24V system 1-channel control with status monitoring |
| 2940087 | EMG 10-REL/KSR-G 24/1-LC AU | 24V | 1 NO | Gold-plated contacts (AU) | 24V system 1-channel precision control |
| 2942108 | EMG 10-REL/KSR-G 24/1-LC | 24V | 1 NO | Standard (LC) | 24V system 1-channel general control |
| 2964393 | EMG 10-REL/KSR-230/21-LC AU | 230V AC | 21 Changeover (1CO) | Gold-plated contacts (AU) | 230V AC system 21-channel precision control |
| 2964380 | EMG 10-REL/KSR-230/21-LC | 230V AC | 21 Changeover (1CO) | Standard (LC) | 230V AC system 21-channel general control |
| 2964416 | EMG 10-REL/KSR-230/1-LC AU | 230V AC | 1 NO | Gold-plated contacts (AU) | 230V AC system 1-channel precision control |
| 2964403 | EMG 10-REL/KSR-230/1-LC | 230V AC | 1 NO | Standard (LC) | 230V AC system 1-channel general control |
| 2964445 | EMG 10-REL/KSR-120/21-LC | 120V AC | 21 Changeover (1CO) | Standard (LC) | 120V AC system 21-channel general control |
| 2964461 | EMG 10-REL/KSR-120/1-LC AU | 120V AC | 1 NO | Gold-plated contacts (AU) | 120V AC system 1-channel precision control |
| 2964432 | EMG 10-REL/KSR-120/1-LC | 120V AC | 1 NO | Standard (LC) | 120V AC system 1-channel general control |
| 2942658 | EMG 10-REL/KSR-24/21-LC | 24V | 21 Changeover (1CO) | Standard (LC) | 24V system 21-channel general control |
| 2947750 | EMG 10-B2 | Accessory | N/A | Module accessory (e.g., base/adapter) | Compatibility expansion for EMG 10-REL/KSR modules |
Core Technical Specifications (Universal)
| Parameter | Value | Notes |
|---|---|---|
| Control Voltage Range | 24V/48V/60V DC; 120V/230V AC | Model-specific (see table above) |
| Contact Capacity | AC 250V/6A; DC 24V/3A (standard); AC 250V/4A; DC 24V/2A (AU models) | Load-dependent, derate for long-term use |
| Contact Material | Silver-nickel (AgNi, standard); Gold-plated AgNi (AU models) | AU for low-level signals/precision switching |
| Operating Temperature | -25℃~70℃ | Adapts to harsh industrial environments |
| Mounting Type | 35mm DIN rail (NS 35/7.5) | Compact design, space-saving |
| Protection Class | IP20 (cabinet mounting) | Dust-proof, protects against solid objects ≥12mm |
| Insulation Strength | 2kV (coil-contact) | Anti-interference, ensures signal stability |
| Response Time | ≤15ms (operate); ≤10ms (release) | Fast switching for dynamic control |
| Mechanical Life | ≥10⁷ operations | High durability, low maintenance |
| Electrical Life | ≥10⁶ operations (full load) | Reliable for long-term industrial use |
| Certifications | CE, UL, CSA | Complies with global industrial standards |
| Connection Type | Screw terminals | Secure wiring for industrial applications |
Application Scenarios & Recommended Models
1. 24V DC System Control (Most Common Industrial Voltage)
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Requirement: 1-channel precision control (low-level signals)
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Recommended Model: 2940087 (EMG 10-REL/KSR-G 24/1-LC AU)
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Key Reason: Gold-plated (AU) contacts ensure reliable switching of low-level signals
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Requirement: 2-channel parallel control with status monitoring
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Recommended Model: 2940346 (EMG 10-REL/KSR-G 24/2-LCU)
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Key Reason: LCU suffix provides LED indicator and auxiliary contact for real-time status checks
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Requirement: 21-channel mixed control (NO/NC)
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Recommended Model: 2942153 (EMG 10-REL/KSR-G 24/21-LC) / 2940090 (AU version)
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Key Reason: 21 changeover contacts (1CO) meet complex mixed control needs
2. High-Voltage AC System Control (120V/230V AC)
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Requirement: 1-channel general control (230V AC)
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Recommended Model: 2964403 (EMG 10-REL/KSR-230/1-LC)
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Key Reason: Standard configuration for mainstream 230V AC industrial systems
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Requirement: 21-channel precision control (120V AC)
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Recommended Model: 2964445 (EMG 10-REL/KSR-120/21-LC) + 2964461 (AU version)
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Key Reason: 21 changeover contacts; AU version for low-level signal compatibility
3. Special Voltage System Control (48V/60V DC)
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Requirement: 60V DC 1-channel general control
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Recommended Model: 2941303 (EMG 10-REL/KSR-G 60/1-LC)
-
Key Reason: Dedicated 60V control voltage for specialized industrial equipment
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Requirement: 48V DC 21-channel precision control
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Recommended Model: 2964225 (EMG 10-REL/KSR-G 48/21-LC AU)
-
Key Reason: Gold-plated contacts ensure reliability in 48V precision systems
4. Low-Level Signal/Precision Switching
- Requirement: Any voltage, low-level signal switching
- Recommended Models: All AU-suffixed models (e.g., 2940087, 2964393)
- Key Reason: Gold-plated contacts minimize contact resistance and oxidation for sensitive signals
Core Advantages
- Wide Voltage Compatibility: Covers 24V/48V/60V DC and 120V/230V AC, adapting to diverse industrial power systems
- Flexible Contact Configurations: 1-channel (NO), 2-channel (NO), and 21-channel (changeover) options for different control needs
- Precision & Reliability: Gold-plated (AU) models for low-level signals; standard AgNi contacts for heavy loads
- Status Monitoring: LCU models feature LED indicators and auxiliary contacts for real-time control status tracking
- Industrial-Grade Durability: Wide temperature range, high insulation strength, and robust terminal design for harsh environments
- Easy Installation: DIN rail mounting and secure screw terminals simplify on-site deployment and maintenance
Installation & Usage Notes
- Voltage Matching: Strictly match the module’s control voltage with the system voltage (e.g., 24V module for 24V DC systems)
- Load Capacity: Ensure the contact current/voltage does not exceed the module’s rating (add 20% margin for reliability)
- Contact Type Selection: Choose NO contacts for "normally off" control; changeover (21) contacts for mixed NO/NC needs
- AU Model Usage: Use gold-plated (AU) models for low-level signals (<100mV) or frequent switching to avoid contact oxidation
Phoenix EMG 10-REL/KSR Series: Industrial Relay Modules - Selection Guide
