Overview
The Phoenix Contact STTBS 2,5-PE is a protective conductor double-level terminal block designed for secure electrical connections in industrial automation and control applications. This spring-cage terminal block provides dual-level connection capability, enabling efficient wire organization on DIN rail mounting systems while maintaining low-resistance grounding connections.
Key Features
- Spring-cage connection: Reliable, tool-free wire insertion on both 1st and 2nd level
- Dual-level design: 4 connection points for flexible circuit routing
- Green-yellow color coding: Industry-standard protective conductor identification
- Wire cross-section support: Accommodates 0.08 mm² to 4 mm² conductors
- DIN rail compatible: NS 35/7.5 and NS 35/15 mounting options
- Proven construction: Meets IEC 60947-7-1 and DIN EN 60947-7-2 standards
Technical Specifications
- Connection Method: Spring-cage
- Number of Connections: 4
- Wire Cross-Section Range: 0.08 mm² – 4 mm² (rated at 2.5 mm²)
- Nominal Voltage: 500 V
- Nominal Current: 22 A
- Maximum Load Current: 26 A (4 mm² conductor)
- Mounting Type: NS 35/7.5, NS 35/15 DIN rail
- Color: Green-yellow
- Insulating Material: Polyamide (Group I)
- Standards Compliance: IEC 60947-7-1, DIN EN 60947-7-2, UL 94 V0
- Overvoltage Category: III
- Maximum Power Dissipation: 0.77 W
Typical Applications
- Industrial control panels and electrical enclosures
- Protective grounding circuits in machinery control
- Power distribution terminals in PLCs and automation systems
- Rail-mounted electrical installations requiring multi-level connections
- Equipment requiring IEC 60947-7-2 protective conductor compliance
Compatibility & Replacements
Compatible With
- Standard DIN 35 mm top-hat rail systems
- Phoenix Contact NS 35/7.5 and NS 35/15 rail profiles
- Industrial control enclosures and electrical panels
- Standard grounding bus systems requiring spring-cage terminals
Replaces / Drop-In Replacement For
- Direct replacement for Phoenix Contact STTBS 2,5-PE part number 3038480
- Equivalent protective conductor solutions in comparable spring-cage designs
Works With
- Phoenix Contact DIN rail mounting systems
- Standard electrical enclosure grounding configurations
- Compatible with all major PLC and industrial control platforms requiring DIN rail terminals
