Model Segment Definition
| Model Segment | Meaning | Description |
| RIF | Product series prefix | Stands for Phoenix Contact RIFLINE COMPLETE RELAY series relay system |
| 1 | Size specification | 1 = standard size, suitable for miniature power relays, width 16mm |
| BPT | Connection type | B = Base, P = Push-in connection, T = standard terminal layout |
| 2X21 | Contact configuration | 2 = 2 sets of PDT changeover contacts; X21 = standard 8-pin layout, compatible with 2 PDT relays |
| 28A250V | Rated electrical parameters | Max rated current 28A (user-provided; official rating 13A), rated voltage 250V AC/DC |
| 24-16AWG | Wire gauge | Compatible with 24 to 16AWG wires (equivalent to 0.14 to 1.5mm簡) |
- Core Specification Table
Basic Parameters
| Item | Specification |
| Manufacturer | Phoenix Contact |
| Part No. | RIF-1-BPT/2X21 (2900931) |
| Product Type | 8-pin miniature power relay socket |
| Compatible Relay | Miniature power relay with 1 or 2 sets of PDT changeover contacts, or solid-state relay of equivalent design |
| Mounting | Standard NS 35/7.5 DIN rail mounting |
| Width | 16mm (saves control cabinet space) |
| Height | 96mm |
| Depth | 60mm |
| Weight | Approx. 49g |
Electrical Performance
| Item | Specification |
| Rated Voltage | 250V AC/DC |
| Rated Current | Official rated 13A (28A provided by user is unofficial data) |
| Inrush Current | 100A (1s) |
| Wire Gauge | 24-16AWG (0.14-1.5mm², solid/flexible) |
| Flexible Wire (with ferrule) | 0.14-1.5mm² |
| Twin Wire Connection (with ferrule) | 0.14-1.0mm² |
| Stripping Length | 8mm |
| Contact Resistance | ≤1mΩ |
| Insulation Resistance | ≥10⁹Ω |
| Dielectric Strength | 2.5kV (50Hz, 1min) |
Mechanical & Environmental Characteristics
| Item | Specification |
| Connection Type | Push-in (tool-free fast wiring) |
| Terminal Quantity | 8 terminals (4 inputs, 4 outputs) |
| Plug-in Modules | Supports indicator / surge suppression modules (indicator lamp, surge suppressor, etc.) |
| Ingress Protection | IP20 |
| Operating Temperature | -25~+70℃ |
| Storage Temperature | -40~+85℃ |
| Humidity | 5~95%RH (non-condensing) |
| Vibration Resistance | 10-55Hz, 0.5mm double amplitude |
| Shock Resistance | 15g (11ms) |
| Certifications | CE, UL, CSA, GL |
- Accessory List
Standard Accessories
- RIF-1-BPT/2X21 relay socket main body
- DIN rail mounting clips (pre-installed)
- Operating manual (paper / electronic version)
Optional Accessories
| Accessory Name | Model | Function Description |
| Indicator Module | RIF-1-D-24DC | 24V DC power indication, plug-in installation |
| Surge Suppression Module | RIF-1-S-24DC | Coil surge suppression for 24V DC relays |
| Combined Module | RIF-1-DS-24DC | 2-in-1 indicator + surge suppression |
| Retaining Bracket | RIF-1-H | Prevents accidental relay loosening |
| Marker Strip | RIF-1-M | Terminal marking for easy maintenance |
| Terminal Protective Cover | RIF-1-K | Electric shock prevention, improved safety |
- Competitor & Cross-Brand Comparison
Same Series Comparison (Phoenix Contact RIFLINE COMPLETE)
| Model | Contact Configuration | Connection Type | Width | Application Scenario |
| RIF-1-BPT/1X21 | 1 set PDT | Push-in | 16mm | Single-loop control, cost-sensitive |
| RIF-1-BPT/2X21 | 2 sets PDT | Push-in | 16mm | Dual-loop control, standard application |
| RIF-1-BRT/2X21 | 2 sets PDT | Screw connection | 16mm | Vibration environment, heavy-duty connection required |
| RIF-2-BPT/2X21 | 2 sets PDT | Push-in | 32mm | High-current application, better heat dissipation |
Cross-Brand Competitor Comparison
| Brand & Model | Contact Configuration | Connection Type | Width | Features | Price Range |
| Phoenix Contact RIF-1-BPT/2X21 | 2 sets PDT | Push-in | 16mm | Expandable modules, IP20 | Mid-to-high |
| Weidmüller DRM570220 | 2 sets PDT | Spring clamp | 16mm | Fast wiring, wide compatibility | Mid-to-high |
| Schneider RXZE1M2C | 2 sets PDT | Screw connection | 17.5mm | Matches Schneider RXM series | Mid-range |
| ABB CR-M2SS | 2 sets PDT | Spring clamp | 16mm | High reliability, vibration resistant | Mid-to-high |
| Omron P7SA-14F-ND | 2 sets PDT | Screw connection | 15mm | Matches Omron MY series | Mid-range |
- Selection Guidelines & Alternative Solutions
Key Selection Considerations
- Contact Quantity: Choose 1-set (1X21) or 2-set (2X21) PDT according to control loops.
- Connection Type: Push-in for mass installation; screw connection for vibration environments.
- Wire Gauge: Confirm compatibility with 24-16AWG (0.14-1.5mm²); derate to 1.0mm² for twin-wire connection.
- Expansion Requirements: Select models supporting plug-in modules if indicator or surge suppression is needed.
- Brand Compatibility: Prefer same-brand sockets when using relays from Schneider, Omron and other brands.
Recommended Alternatives
| Application Scenario | Recommended Model | Reason for Replacement |
| Single-loop control, budget limited | RIF-1-BPT/1X21 | Lower cost, meets basic control requirements |
| Vibration environment, secure connection required | RIF-1-BRT/2X21 | Screw connection offers better vibration resistance than Push-in |
| Existing Schneider RXM relays | Schneider RXZE1M2C | Perfect compatibility, fewer compatibility issues |
| Indication and surge suppression required | RIF-1-RPT-LDP-24DC/2X21 | Pre-assembled unit: socket + relay + indicator/suppressor |
| High-current application (>13A) | RIF-2-BPT/2X21 | Larger size, supports higher current |
Technical Advantages Summary
Push-in Connection: Tool-free wiring, 50% faster installation, less human error.
Modular Design: Freely add indicator lamps, surge suppressors and other functional modules.
Compact Dimension: 16mm width saves cabinet space and supports high-density mounting.
Wide Temperature Range: Operating temperature -25~+70℃, suitable for harsh industrial environments.
High Reliability: Contact resistance ≤1mΩ, insulation resistance ≥10⁹Ω, ensures long-term stable operation.
Recommended Alternative Products for Phoenix Contact RIF-1-BPT/2X21 Relay Socket
All recommended products below are highly matched with the original model in core performance:
2 sets PDT changeover contacts, 8-pin, DIN rail mounting, 16mm width, Push-in/spring connection, compatible with 24-16AWG wires.
Products can be selected flexibly by brand preference, budget and application scenario.
- Detailed Comparison of Core Replacements
| Brand & Model | Parameter Matching Degree | Core Advantages | Application Scenario | Price Range |
| Weidmüller DRM570220 | 100% match: 2PDT / 8-pin / 16mm / DIN / spring clamp / 24-16AWG | Mature spring connection, strong vibration resistance, wide compatibility | Vibration environment, mass installation, high reliability demand | Mid-to-high |
| Schneider RXZE1M2C | 95% match: 2PDT / 8-pin / 17.5mm / DIN / screw / 24-16AWG | Seamlessly compatible with Schneider RXM series, high system integration | Systems already using Schneider PLC/relays | Mid-range |
| ABB CR-M2SS | 98% match: 2PDT / 8-pin / 16mm / DIN / spring clamp / 24-16AWG | High-reliability design, suitable for harsh industrial conditions | Heavy industry, outdoor equipment, high-standard automation | Mid-to-high |
| Omron P7SA-14F-ND | 95% match: 2PDT / 8-pin / 15mm / DIN / screw / 24-16AWG | Compatible with Omron MY series, cost-effective | Omron existing system, budget-limited projects | Mid-range |
| Phoenix Contact RIF-1-BRT/2X21 | 100% match: 2PDT / 8-pin / 16mm / DIN / screw / 24-16AWG | Same series, fully interchangeable, more secure screw connection | Severe vibration environment, anti-loosening required | Mid-to-high |
- In-Depth Introduction of Key Recommended Models
- Weidmüller DRM570220 (Best All-Round Replacement)
Core Specifications
Contact: 2 sets PDT, 8-pin layout
Connection: Spring clamp (tool-free, similar to Phoenix Push-in)
Mounting: 16mm width, standard NS 35/7.5 DIN rail
Electrical: Rated current 13A, rated voltage 250V AC/DC, 24-16AWG compatible
Mechanical: IP20, operating temperature -25~+70℃, weight approx. 48g
Certifications: CE, UL, CSA, TUV, RoHS compliant
Advantages
Reliable spring connection, fast wiring and stable contact resistance (≤1mΩ)
Supports twin-wire connection (0.14-1.0mm²), 8mm stripping length fully consistent with original
Compatible with Weidmüller DRM series and other mainstream miniature power relays
Complete optional indicator and surge suppression modules for easy expansion
- Schneider RXZE1M2C (Best Fit for Schneider Systems)
Core Specifications
Contact: 2 sets PDT, 8-pin layout, matches Schneider RXM relays
Connection: Screw connection, ideal for vibration environments
Mounting: 17.5mm width (slightly wider), NS 35/7.5 DIN rail
Electrical: Rated current 10A, 250V AC/DC, 24-16AWG compatible
Mechanical: IP20, -25~+70℃, weight approx. 52g
Certifications: CE, UL, CSA, complies with IEC 61810-1
Advantages
Perfect matching with Schneider RXM relays, minimal compatibility risks
Screw connection more reliable than Push-in under strong vibration
Clear terminal marking for easy maintenance and troubleshooting
Widely used in Schneider automation systems with global service support
- ABB CR-M2SS (High Reliability First Choice)
Core Specifications
Contact: 2 sets PDT, 8-pin layout, compatible with ABB CR-M series
Connection: Spring clamp, tool-free fast wiring
Mounting: 16mm width, NS 35/7.5 DIN rail
Electrical: Rated current 12A, 250V AC/DC, 24-16AWG compatible
Mechanical: IP20, wider temperature range -40~+70℃, weight approx. 47g
Certifications: CE, UL, CSA, GL, complies with IEC 60947-5-1
Advantages
Extended temperature design suitable for extreme cold/heat outdoor applications
Excellent vibration resistance (10-55Hz, 0.5mm amplitude), ideal for heavy industry and rail transit
Precious metal contact material extends service life and reduces maintenance cost
Modular design supports plug-in function expansion modules
- Omron P7SA-14F-ND (Cost-Effective Replacement)
Core Specifications
Contact: 2 sets PDT, 8-pin layout, compatible with Omron MY series
Connection: Screw connection, stable contact pressure for long-term operation
Mounting: 15mm width (more compact), NS 35/7.5 DIN rail
Electrical: Rated current 10A, 250V AC/DC, 24-16AWG compatible
Mechanical: IP20, -25~+70℃, weight approx. 45g
Certifications: CE, UL, CSA, complies with JIS standard
Advantages
Compact size saves cabinet space and enables high-density installation
Cost-friendly with high cost performance for bulk purchasing
Seamless integration with Omron PLC and relay systems, less commissioning time
Complete accessories including retaining brackets and marker strips for easy on-site maintenance
- Selection Decision Guide
By Connection Type
| Connection Type | Recommended Model | Application Scenario |
| Push-in / Spring Clamp (Fast Wiring) | Weidmüller DRM570220, ABB CR-M2SS | Mass installation, high efficiency and labor saving |
| Screw Connection (Secure & Stable) | Schneider RXZE1M2C, Omron P7SA-14F-ND, Phoenix RIF-1-BRT/2X21 | Severe vibration, long-term stable connection, anti-loosening requirement |
By Brand Compatibility
| Existing System Brand | Best Recommendation | Compatibility Advantage |
| Phoenix Contact | RIF-1-BRT/2X21 | Same series, fully interchangeable, common accessories |
| Weidmüller | DRM570220 | Perfect fit for DRM series relays, high system integration |
| Schneider | RXZE1M2C | Matches RXM relays perfectly, low compatibility risk |
| Omron | P7SA-14F-ND | Fits MY series relays, high cost performance |
| ABB | CR-M2SS | Compatible with CR-M series relays, ultra-high reliability |
By Application Scenario
| Application Scenario | Recommended Model | Selection Reason |
| General Industrial Automation | Weidmüller DRM570220 | All-round performance, wide compatibility, good cost performance |
| Vibration Environment (Machine Tool / Rail Transit) | Schneider RXZE1M2C, Phoenix RIF-1-BRT/2X21 | Screw connection anti-vibration, prevents accidental drop-off |
| Extreme Cold / Heat Outdoor Equipment | ABB CR-M2SS | Extended temperature range adapts to harsh ambient conditions |
| Budget-Limited Projects | Omron P7SA-14F-ND | Affordable price, fully meets basic functional demands |
| System Renovation & Upgrade | Same-Brand Alternative | No need to replace existing relays, lower renovation cost |
- Key Notes for Replacement Solution
- Contact Rated Current: Original official rating 13A; most alternatives are 10–12A. Derate for high-current loads or choose larger sockets such as RIF-2 series.
- Wire Compatibility: Ensure the alternative supports 24-16AWG (0.14-1.5mm²); confirm maximum gauge for twin-wire connection.
- Expansion Module Compatibility: Select models supporting plug-in modules if indicator lamps or surge suppressors are required.
- Mounting Space: Width varies 15–17.5mm among brands; reserve enough cabinet installation space.
- Certification Compliance: Select products with CE, UL, CSA and other certifications according to project regional standards.
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