Woertz ter­mi­nal blocks

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Pro­duct catalogue

Ter­mi­nal blocks

One of the simp­lest com­pon­ents of an elec­tri­cal cir­cuit are the ter­mi­nal blocks. They’ve just got two simp­le func­tions: first­ly, lin­king up the ter­mi­nal blocks’ wires to make them con­duc­ti­ve, and second­ly, hol­ding the wire ends in place. To ful­fil the­se func­tions pro­per­ly in the long time, though, an array of phy­si­cal aspects need to be taken into con­side­ra­ti­on. Many of the­se are misun­ders­tood. All ter­mi­nal blocks have the same essen­ti­al com­pon­ents. The wire ends to be con­nec­ted are pushed onto the con­nec­ting bridge but remain detachable.

An over­view of ter­mi­nal blocks

Screw ter­mi­nals

Screw ter­mi­nals are the bul­kiest ter­mi­nal blocks for the best contact.

  • Maxi­mum power transmission
  • Screw ter­mi­nal with side contact
  • A screw for all applications
  • Inscrip­ti­on panel, front
  • The best-sel­ling ter­mi­nal in Switzerland
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Spring-loa­ded terminals

Spring-loa­ded ter­mi­nals are quick to assem­ble and pro­vi­de medi­um-strength contact.

  • Func­tion­al ope­ra­ti­on of all elements
  • Inscrip­ti­on panel, front and side
  • Com­pa­ti­ble with cross-con­nec­tion rakes
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Spring-cage ter­mi­nals

Spring-cage ter­mi­nals are the most afforda­ble ter­mi­nal blocks but pro­vi­de the wea­k­est contact.

  • Push-in ter­mi­nal with com­for­ta­ble contact
  • Lar­ge cross-sec­tion area mea­su­ring 0.5–4 mm²
  • Inscrip­ti­on panel, front
  • new, pluggab­le cross-con­nec­tion rakes
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The right tech­no­lo­gy for every application

Tech­ni­cal background

Com­pa­ri­son with maxi­mum power transmission

Clam­ping force depends on:

  • Tor­que
  • Spring force (limi­t­ed by housing’s resi­li­ence, wire/strand ben­ding strength)
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Cont­act resistance

Cont­act resi­stance and cont­act qua­li­ty depend on:

  • Cont­act surface
  • Cont­act force
  • Cont­act material
  • Impu­ri­ty lay­ers (oxi­des, dirt)
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Assem­bly times – difference

The truth about assem­bly times and the dif­fe­rence bet­ween screw ter­mi­nals and spring-cage terminals.

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Moving forces when shaken

Moving forces depend on:

  • Mass of the conductor
  • Fre­quen­cy of movement
  • Clam­ping force > as moving force
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Heat dis­si­pa­ti­on

Gene­ra­ti­on of heat depends on:

  • Cont­act quality
  • Cur­rent
  • Sur­face area of metal parts
  • Hea­ting capa­ci­ty (buf­fera­ble heat quan­ti­ty) of metal parts
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Heat dis­si­pa­ti­on

Gene­ra­ti­on of heat depends on:

  • Cont­act quality
  • Cur­rent
  • Sur­face area of metal parts
  • Hea­ting capa­ci­ty (buf­fera­ble heat quan­ti­ty) of metal parts
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Elec­tri­cal components

Pro­fi­le rail, item no. 4382 and 4383, type C30

29×15×2mm and 32×18×3mm

  • available in four dif­fe­rent materials
  • We can pro­vi­de all lengths of pro­fi­le rails with a pri­ce sup­ple­ment for the cut
  • Pro­fi­le rails are also available with fastening holes or straps for an addi­tio­nal cost
Profile rail 4383R

Com­bo rail, item no. 80291, DIN35/C30

29×15×2mm and 32×18×3mm

  • out­side flanks in line with EN 60715
  • to snap blocks and devices in line with DIN35
  • Inte­ri­or pro­fi­le to include slot nuts, series no. 4420 and no. 44320, and fixing brackets, series no. 4350
Profile rail 80291 2

Fixing bracket with alu­mi­ni­um alloy

for pro­fi­le rails, no. 4382, 4383 and 80291, type C30

  • also available in A4 stain­less steel
  • with six-sided slot­ted screw
  • Wire base pla­tes are always requi­red to lay wires
43695 dimension drawing new
Woertz AG fixing bracket