PE - Protective-earth version; four connections across two levels bonded to one earth potential, with a green-yellow housing
Description
Double-level protective-earth connection
ULO-TB255-STTB2.5-PE provides four spring-cage connections across two levels. A bonding link connects both levels to the metal grounding foot, forming one protective-earth potential on NS35/7.5 DIN rail. The housing is green-yellow.
Property
STTB2.5-PE
Function
Protective-earth terminal
Levels / connection points / potentials
2 / 4 / 1
Nominal cross section
2.5mm²
Nominal current / voltage / maximum load current
Not assigned for this PE terminal
Rated impulse voltage
6kV
Overvoltage category / pollution degree
III / 3
Protection
IP20
Operating temperature
-60°C to +110°C
Conductor connection and preparation
Connection property
Specification
Solid conductor
0.08–4mm²; 28–12AWG
Flexible conductor
0.08–2.5mm²; 28–14AWG
Flexible conductor with ferrule
0.14–2.5mm²
Stripping length
8–10mm
Connection method
Spring cage
Clamping screw / torque
Not applicable
Materials
Property
Specification
Insulation / material group
PA66 / I
Flammability
UL94V-0
Contacts
Tin-plated copper alloy
Housing color
Green-yellow
Outline and mounting dimensions
Dimension
Value
Width × length × overall height
5.15×67.6×45.9mm
Top to rail-seat datum
39.9mm
Rail centerline to right end
35.5mm
Half rail width
17.5mm
DIN rail
NS35/7.5
STTB2.5-PE external envelope: 5.15mm width, 67.6mm length and 45.9mm overall height. The rail-seat reference is 39.9mm below the top.
