257-740
WAGO Corporation
257-740
WAGO Corporation
STACKABLE PCB TERMINAL BLOCK; PU
Reference Price (USD)
1+
$0.84180
500+
$0.833382
1000+
$0.824964
1500+
$0.816546
2000+
$0.808128
2500+
$0.79971
Exquisite packaging
Discount
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257-740
$0.84
Product details
Designed for railway signaling systems, WAGO Corporation's 257-740 delivers unmatched reliability in Terminal Blocks - Wire to Board applications. This EN 50155-compliant terminal block withstands severe vibration and temperature extremes encountered in rolling stock. The 510KBA-BAAG variant features fail-safe interlocking for mission-critical train control applications.The 1 crash-resistant design meets UIC 651 standards. The interlocking mechanism maintains connectivity during 50G impact scenarios.With 1 power-rated contacts, the block handles traction system currents. Each position features arc runners that safely extinguish 1500A breaking currents.Horizontal with Board configuration accommodates gangway cable routing. The underfloor-mounted version resists ballast impact and track debris.Rated for 15 A with 100% duty cycle, the contacts use sintered tungsten composites. The material withstands pantograph arcing without contact welding.The 300 V rating exceeds 25kV AC catenary requirements. Creepage extenders prevent tracking across polluted insulator surfaces.Compatible with 12-28 AWG railway-grade cables, the termination resists flex fatigue. The spring-loaded design compensates for 10 million vibration cycles.Through Hole attachment survives 5Hz-150Hz random vibration. The floating mount design isolates PCB from carbody resonance frequencies.The Screwless - Push Button Clamp method complies with EN 50343 wiring standards. The cold-applied compression system eliminates thermal stress on adjacent components.Push Button Actuated include integrated short-circuit detection. The sacrificial fusible links protect against third-rail flashover events.The Red coding follows UIC 560 visibility standards. Retroreflective markings remain visible in tunnel lighting conditions.
Product Attributes
- Product Status: Active
- Number of Levels: 1
- Positions Per Level: 1
- Pitch: -
- Mating Orientation: Horizontal with Board
- Current: 15 A
- Voltage: 300 V
- Wire Gauge: 12-28 AWG
- Mounting Type: Through Hole
- Wire Termination: Screwless - Push Button Clamp
- Features: Push Button Actuated
- Color: Red
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