25 Series 7.62mm Barrier Terminal Blocks

25C A Barrier Terminal
25C B Barrier Terminal
25S A Barrier Terminal
25S B Barrier Terminal
25H A Barrier Terminal
25H B Barrier Terminal
25R A Barrier Terminal
25R B Barrier Terminal
25S H Elevated Barrier Terminal

Series Part Number

Part Number: ULO - TB44 - 25C / A - 02 P - 3 100A
Explanation:

Brand

Series Code

TB44 - 25 series, 7.62mm pitch; this ordering breakdown covers the eight A/B configurations only

Termination

25C - Straight pins
25S - Edge-offset straight pins
25H - Eyelet tails
25R - Bent pins; each is listed with A and B bodies

Body

A - End mounting extensions
B - Compact ends

Positions

02–24 - Two-digit count from 2 to 24 positions

Position Suffix

Colour

1 - Grey
2 - Blue
3 - Black
4 - Green
5 - Orange
6 - Red
7 - Transparent
8 - Yellow
9 - White

Customer Requirements

100A - Fixed suffix shown in all eight drawings

Description

Model selection

The 25 series uses 7.62mm pitch and screw connections in a single row, with 2–24 positions. A models include end mounting extensions; B models have compact ends. The 25S/H version has an elevated body with long pins and supporting feet.

ModelTail and bodyStrip length
25C/AStraight pins; mounting extensionsUnspecified
25C/BStraight pins; compact ends
25S/AEdge-offset straight pins; mounting extensions7mm
25S/BEdge-offset straight pins; compact ends
25H/AEyelet tails; mounting extensions
25H/BEyelet tails; compact endsUnspecified
25R/ABent pins; mounting extensions7mm
25R/BBent pins; compact ends
25S/HElevated body, long straight pins and support feet

IEC ratings

ModelsCategory III / pollution degree 3Category III / pollution degree 2Category II / pollution degree 2CurrentImpulse voltage
25C/A, 25C/BVoltage unspecified320VVoltage unspecified24A6kV
25S/A, 25S/B320V600V
25H/A, 25H/B, 25R/A, 25R/B, 25S/H300V2.5kV

UL ratings

ModelsUse group BUse group CUse group DWire range
25C/A, 25C/B, 25S/A, 25S/B, 25H/A, 25H/B, 25R/A, 25R/B15A / 300V15A / 300V10A / 300V22–14AWG
25S/HUnspecified

Wiring and materials

CharacteristicSpecification
Pitch / position range7.62mm / 2–24
Connection screw / torqueM3 / 0.5N·m
Metric conductor range0.5–2.5mm² for all models
Conductor preparationsSolid, flexible and ferruled flexible conductors for 25C/A, 25C/B, 25S/A, 25S/B, 25H/A, 25H/B, 25R/A and 25S/H; preparation-specific ranges unspecified for 25R/B
Operating temperature-40–105°C
Protection ratingIP20
HousingPA66, material group I, UL94V-0
Contacts / solder pinsTin-plated brass for 25C/A, 25C/B, 25S/A, 25S/B, 25H/A, 25H/B, 25R/A and 25R/B; tin-plated copper alloy for 25S/H
Screw materialNickel-plated steel for C, S, H and R A/B models; finish unspecified for 25S/H

Body and mounting dimensions

N is the number of positions. These body dimensions apply to 25C/A, 25C/B, 25S/A, 25S/B, 25H/A, 25H/B, 25R/A and 25R/B. Dimensions for the elevated 25S/H body are unspecified.

ReferenceA modelsB models
Overall length7.62×(N+2)mm7.62×N+1.40mm
Central body length7.62×N+1.40mm
Contact span7.62×(N−1)mm
Body depth / height12.80mm / 14.30mm
End mounting holesØ3.40mm with Ø5.50mm surround reference for 25S/A, 25H/A and 25R/A; hole diameter unspecified for 25C/ANo end mounting extensions

C and S straight-pin dimensions

Reference25C/A and 25C/B25S/A25S/B
Pin width / thickness1.00mm / 0.80mm
Pin projection4.30±0.30mm5.10±0.30mm
PCB hole diameter / pitchØ1.60mm / 7.62mm
Pin offset from indicated side edge25C/A: 5.00mm2.75mm2.75mm from the near pin-side edge
25C/A end to first pin10.93mmNot applicable
25C A body straight pins and PCB holes
25C/A dimensions and PCB footprint.
25C B body straight pins and PCB holes
25C/B dimensions and PCB footprint.
25S A offset pins and end mounting holes
25S/A dimensions and PCB footprint.
25S B offset pins and PCB holes
25S/B dimensions and PCB footprint.

H eyelet-tail dimensions

Reference25H/A25H/B
Tail width / thickness3.00mm / 0.80mm
Tail projection10.90±0.30mm
Eyelet opening width / length1.50mm / 2.50mm1.50mm / 2.20mm
25H A eyelet tails and mounting extensions
25H/A eyelet-tail outline.
25H B eyelet tails and compact body
25H/B eyelet-tail outline.

R bent-pin dimensions

Reference25R/A25R/B
Pin tip / shoulder / thickness1.00mm / 3.00mm / 0.80mm
Tail drop4.50±0.30mm
Horizontal reference3.50±0.30mm projection16.25±0.30mm from the indicated opposite body edge to the pin tip
PCB hole diameter / pitchØ1.60mm / 7.62mm
PCB row and end referencesAs illustrated4.50mm row offset; 4.51mm end to first pin
25R A bent pins and PCB mounting dimensions
25R/A outline and PCB footprint.
25R B bent-pin outline
25R/B outline and PCB footprint.

Ordering fields

Specify TB44, the complete model and a two-digit position count from 02 to 24. The elevated 25S/H option retains its own body designation.

FieldSelection
Colour code1 grey; 2 blue; 3 black; 4 green; 5 orange; 6 red; 7 transparent; 8 yellow; 9 white
General screw-head field0 slotted; 1 cross-head
General clamping-direction field0 screw down; 1 screw up
Standard suffix0A

Documents