Page 180 - Wago_PCB_TerminalBlocksConnectors_Volume2_2015_US

Combi PCB Terminal Blocks with PUSH WIRE and FIT CLAMP Connections
®
®
1 Pin Spacing: 3.5 mm
178 251 Series
● Compact Combi PCB terminal blocks ideal for automated wiring in the
lighting industry
● Low conductor insertion forces

● PUSH WIRE and FIT CLAMP connections suitable for automated
®
®
wiring systems

Technical data: “251 high” version: “251 mini” version:
3.5 mm/0.138 in. 3.5 mm/0.138 in.
Pin Spacing
0.5–1.5 mm “sol.” 0.5–1 mm “sol.”
2
2
Ratings per IEC/EN 60664-1 IEC/EN 60664-1
Overvoltage category III III II III III II
Pollution degree 3 2 2 3 2 2
Rated voltage 250 V 320 V 630 V 320 V 320 V 630 V
Rated surge voltage 4 kV 4 kV 4 kV 4 kV 4 kV 4 kV
Nominal current 2 A 2 A 2 A 6 A 6 A 6 A
Approvals per UL/CSA UL/CSA
Use group UL1059 B C D B C D
Rated voltage – – – 300 V – 300 V
Nominal current UL – – – 4 A – 4 A
Nominal current CSA – – – – – –
Conductor and solder pin data for “251 high” version:
Connection technology PUSH WIRE ®
Conductor size: solid 0.5–1.5 mm 2
AWG 20–16 “sol.”
Strip length 7.5–8.5 mm / 0.29–0.32 in.
Conductor entry angle 0° to PCB
Connection technology FIT CLAMP (IDC connection)
®
Conductor size: solid 0.5 mm (PVC insulation, simple)
2
2
Conductor size: fine-stranded 0.75 mm (PVC insulation, simple)
Solder pin: length/width 3.6 mm / 0.75 x 0.5 mm
Solder pin: drilled hole diameter 1.2 mm
-0.1
Conductor and solder pin data for “251 mini” version:
Connection technology PUSH WIRE ®
Conductor size: solid 0.5–1 mm 2 for 1 mm “sol.” max. insulation diameter 2.5 mm
2
AWG 20–18 “sol.”
Strip length 8–9 mm / 0.31–0.35 in.
Conductor entry angle 0° to PCB
Connection technology FIT CLAMP (IDC connection)
®
Conductor size: solid 0.5 mm (PVC insulation, simple)
2
Conductor size: fine-stranded 0.75 mm (PVC insulation, simple)
2
Solder pin: length/width 3.2 mm / 0.75 x 0.5 mm
Solder pin: drilled hole diameter 1.1 -0.1 mm
Material data: 251 Series accessories: Pages:
Material group I
Insulating material Polyamide 6.6 (PA 6.6) Operating tool 557
Flammability rating per UL 94 0V Disconnect tool 559
Lower/Upper limit temperature -60 °C / +105 °C
Clamping spring material Chrome-nickel spring steel (CrNi) (only “251 mini” version)
Contact material Copper alloy
Contact plating tin-plated

Additional approvals and corresponding ratings can be found at www.wago.com. For additional technical information, see Section 13.