2K Screw Terminal Plugs

Series Part Number

Part Number:	ULO	-	TB23	-	2KAM	/	5.0	-	02	P	-	4	0	0	0A
Explanation:	Code Prefix		Series and Code Scope TB21 - 5.0mm: factory 2K, 2KM or 2KF TB23 - 5.0mm: factory 2KA, 2KAM, 2KB or 2KBM TB22 - 5.0mm: factory 2K or 2KM for the named KC bodies TB27 - 5.08mm: factory 2K or 2KM TB29 - 5.08mm: factory 2KA, 2KAM, 2KB or 2KBM TB28 - 5.08mm: factory 2K or 2KM for the named KC bodies TB33 - 7.5mm: factory 2K or 2KM TB35 - 7.5mm: factory 2KA, 2KAM, 2KB or 2KBM TB34 - 7.5mm: factory 2K or 2KM for the named KC bodies TB39 - 7.62mm: factory 2K or 2KM TB41 - 7.62mm: factory 2KA, 2KAM, 2KB or 2KBM TB40 - 7.62mm: factory 2KCM only; this breakdown excludes TB21-2KFM, TB27-2KL/2KLM, TB40-2KC and both TB83 models		Factory Body Code 2K, 2KM - Base body or flanged base body on TB21/27/33/39; named KC body or flanged KC body on TB22/28/34 2KA, 2KAM - KA body or flanged KA body; TB23/29/35/41 2KB, 2KBM - KB body or flanged KB body; TB23/29/35/41 2KF - KF body; TB21 only 2KCM - Flanged KC body; TB40 only; use the series-specific combinations above		Pitch 5.0 - TB21, TB22 or TB23: 5.0mm 5.08 - TB27, TB28 or TB29: 5.08mm 7.5 - TB33, TB34 or TB35: 7.5mm 7.62 - TB39, TB40 or TB41: 7.62mm		Positions 02–24 - 2–24 positions; preserve two digits	Count Suffix P - Position-count suffix		Color 1 - Gray 2 - Blue 3 - Black 4 - Green 5 - Orange 6 - Red 7 - Transparent 8 - Yellow 9 - White	Screw Head 0 - Slotted 1 - Cross recess	Screw Clamping 0 - Screw down 1 - Screw up	Configuration 0A - Standard product

Description

Pluggable screw connections

The 2K family provides single-row screw terminal plugs in 5.0mm, 5.08mm, 7.5mm, 7.62mm and 10.16mm pitches. Each listed model supports 2–24 positions. M suffixes identify flanged versions; KA, KB, KC, KF and KL bodies differ in wire entry, screw access and outline. Select the complete model, position count and matching interface. Similar pitch or appearance alone does not establish mating compatibility.

Model ratings and wire preparation

IEC values below apply to overvoltage category III and pollution degree 2, except the TB83 models, which specify III / 3. Other IEC condition combinations are not specified. Conductor ranges apply to solid, flexible and flexible conductors with ferrules as listed. UL AWG limits remain separate from metric wire ranges.

Model	Pitch	IEC current / voltage / impulse	Conductor range	Strip length	UL group
TB21-2K/5.0	5.0mm	20A / 320V / 2.5kV	1–2.5mm²	7mm	A
TB21-2KM/5.0		20A / 320V / 4kV
TB23-2KA/5.0, TB23-2KAM/5.0, TB23-2KB/5.0, TB23-2KBM/5.0		18A / 320V / 4kV
TB22-2KC/5.0, TB22-2KCM/5.0		20A / 320V / 4kV	0.2–2.5mm²	10mm	B
TB21-2KF/5.0, TB21-2KFM/5.0		20A / 320V / 4kV	0.2–2.5mm²	7–8mm	A
TB27-2K/5.08	5.08mm	15A / 320V / 2.5kV	1–2.5mm²	7mm
TB27-2KM/5.08		15A / 320V / 2kV
TB29-2KA/5.08, TB29-2KAM/5.08, TB29-2KB/5.08, TB29-2KBM/5.08		18A / 320V / 4kV
TB28-2KC/5.08		20A / 320V / 4kV	0.2–2.5mm²	10mm	C
TB28-2KCM/5.08			0.2–2.5mm²		B
TB27-2KL/5.08, TB27-2KLM/5.08			1–2.5mm²		D
TB41-2KA/7.62, TB41-2KAM/7.62, TB41-2KB/7.62	7.62mm	18A / 400V / 4kV		7mm	A
TB41-2KBM/7.62		18A / 320V / 4kV		7mm	A
TB40-2KC/7.62		20A / 400V / 6kV	0.2–2.5mm²	10mm	C
TB40-2KCM/7.62		20A / 400V / 4kV	0.2–2.5mm²	10mm	C
TB83-2K/10.16, TB83-2KM/10.16	10.16mm	57A / 600V / 6kV	0.5–10mm²	7–8mm	E
TB33-2K/7.5	7.5mm	16A / 400V / 4kV	1–2.5mm²	7mm	A
TB33-2KM/7.5		16A / 400V / 4kV		7.5mm
TB35-2KA/7.5, TB35-2KB/7.5		18A / 400V / 4kV		7mm
TB35-2KAM/7.5		10A / 400V / 4kV
TB35-2KBM/7.5		18A / 400V / 6kV
TB34-2KC/7.5, TB34-2KCM/7.5		20A / 400V / 4kV	0.2–2.5mm²	10mm	C
TB39-2K/7.62	7.62mm	16A / 400V / 4kV	1–2.5mm²	7mm	A
TB39-2KM/7.62	7.62mm	20A / 400V / 4kV	1–2.5mm²	7.5mm	A

Table group	UL use group B	UL use group C	UL use group D	UL wire range
A	15A / 300V	Not specified	10A / 300V	28–12AWG
B	10A / 300V	10A / 150V		28–16AWG
C		10A / 150V		28–12AWG
D		Not specified		24–12AWG
E	52A / 600V			20–6AWG

Letters A–E above are comparison keys, not product ordering suffixes. TB21-2KF/5.0 specifies a dielectric test of 2000VAC for 1 minute; this test value is not a continuous operating voltage.

Connection hardware and materials

Models	Connection screw	Connection torque	Flange fixing
All models except the exceptions below	M3	0.5N·m	M versions: M2.5, 0.4N·m
TB22-2KC/5.0	M2 shown in the component schedule	Not established for this M2 screw	None
TB27-2KL/5.08, TB27-2KLM/5.08	M2.5	0.4N·m	KLM: M2.5, 0.4N·m
TB83-2K/10.16, TB83-2KM/10.16	M4	1.2N·m	KM flange screw size and torque not specified

Property	Specification
Rows / positions	1 row / 2–24 positions
Connection	Screw clamp
Protection level	IP20
Operating temperature	-40°C to +105°C
Insulating housing and cover	PA66, material group I, UL94V-0
Standard contact construction	Copper-alloy blocks and phosphor-bronze clamps; zinc-plated steel connection screws
Nickel-plated clamps	TB22-2KC and 2KCM; TB27-2K; TB29-2KBM; TB41-2KBM; TB40-2KCM; TB34-2KCM; TB39-2K
Other standard clamps	Tin-plated phosphor bronze, except the TB83 construction below
Standard block finish	Nickel-plated brass; TB28-2KC and TB34-2KC use zinc-plated brass
TB83 construction	Silver-plated copper clamp, stainless-steel spring and nickel-plated copper-alloy cage and M4 screw; KM also lists a tin-plated copper-alloy screw
Environmental declaration	RoHS compliance stated

5.0mm body options

N denotes the number of positions. The contact span is 5.0 × (N−1)mm. Base K and KM bodies differ from the taller KA, KB and KC options; KF uses its own outline. Flange extensions must be included in enclosure clearance.

TB21-2K 5.0mm outline — TB21-2K/5.0: body length 5Nmm.

TB21-2KM 5.0mm outline — TB21-2KM/5.0: flange overall length (5N+10)mm.

TB23-2KA outline — TB23-2KA/5.0: 25.8mm high, 12.4mm deep.

TB23-2KAM outline — TB23-2KAM/5.0: flanged KA configuration.

TB23-2KB outline — TB23-2KB/5.0: 26mm high, 12.4mm deep.

TB23-2KBM outline — TB23-2KBM/5.0: flanged KB configuration. A TB29 marking in its attachment is a labeling discrepancy; this model has 5.0mm pitch.

TB22-2KC outline — TB22-2KC/5.0: 27.5mm high, 15mm deep.

TB22-2KCM outline — TB22-2KCM/5.0: the retained 3.5 × (N−1) pitch-span label is incorrect for this model; its pitch is 5.0mm and contact span is 5.0 × (N−1)mm.

TB21-2KF outline — TB21-2KF/5.0: 18.2mm high, 15mm deep, with an 8.3mm mating projection.

TB21-2KFM outline — TB21-2KFM/5.0: flange overall length (5N+9.8)mm. The attachment uses a generic TB00 drawing prefix.

5.08mm body options

The contact span is 5.08 × (N−1)mm. KL and KLM have an angled wire-entry body and use M2.5 connection screws.

TB27-2K outline — TB27-2K/5.08: base body and mating projection.

TB27-2KM outline — TB27-2KM/5.08: flange overall length (5.08N+10.02)mm.

TB29-2KA outline — TB29-2KA/5.08: 25.8mm high and 12.4mm deep. The 5.0mm pitch note in its attachment is inconsistent with the 5.08mm dimensioned pitch.

TB29-2KAM outline — TB29-2KAM/5.08: flanged KA configuration.

TB29-2KB outline — TB29-2KB/5.08: 26mm high and 12.4mm deep. The attachment's body marking ending in 5.0 does not change the dimensioned 5.08mm pitch.

TB29-2KBM outline — TB29-2KBM/5.08: flanged KB configuration.

TB28-2KC outline — TB28-2KC/5.08: body length (5.08N+0.2)mm.

TB28-2KCM outline — TB28-2KCM/5.08: flange overall length [5.08(N+1)+4.92]mm.

TB27-2KL outline — TB27-2KL/5.08: 25.5mm high and 15.56mm deep. Its attachment uses a generic TB00 prefix.

TB27-2KLM outline — TB27-2KLM/5.08: 25.5mm high, 15.52mm deep and (5.08N+10.16)mm across the flanges; attachment prefix TB00 is generic.

7.5mm and 7.62mm body options

The two pitches are distinct. Use 7.5 × (N−1)mm or 7.62 × (N−1)mm for contact span as appropriate. Drawings showing only the active terminal body do not establish total flange width.

TB33-2K outline — TB33-2K/7.5: body length [7.5(N−1)+5.61]mm. The retained body stamp reads TB39/7.62; the dimensioned 7.5mm pitch applies here.

TB33-2KM outline — TB33-2KM/7.5: flange overall length [7.5(N−1)+18.0]mm. The TB39/7.62 body stamp is not the applicable pitch.

TB35-2KA outline — TB35-2KA/7.5: 25.8mm high, 12.4mm deep and [7.5(N−1)+5.5]mm body length.

TB35-2KAM outline — TB35-2KAM/7.5: flanged KA body; IEC current is 10A.

TB35-2KB outline — TB35-2KB/7.5: KB body and mating projection.

TB35-2KBM outline — TB35-2KBM/7.5: flange overall length (7.5N+10.9)mm and flange centres (7.5N+4.8)mm.

TB34-2KC outline — TB34-2KC/7.5: 27.5mm high and 15mm deep.

TB34-2KCM outline — TB34-2KCM/7.5: 27.5mm body height and 21.75mm screw-envelope depth.

TB39-2K outline — TB39-2K/7.62: body length [7.62(N−1)+5.61]mm.

TB39-2KM outline — TB39-2KM/7.62: flange overall length [7.62(N−1)+18.06]mm.

TB41-2KA outline — TB41-2KA/7.62: 25.8mm high and 12.4mm deep.

TB41-2KAM outline — TB41-2KAM/7.62: flanged KA body.

TB41-2KB outline — TB41-2KB/7.62: KB body with an 8.3mm mating projection.

TB41-2KBM outline — TB41-2KBM/7.62: flange overall length [7.62(N−1)+18.3]mm; flange centres [7.62(N−1)+12.2]mm.

TB34-2KC 7.5mm reference outline — This retained reference depicts TB34-2KC/7.5, not TB40-2KC/7.62. Do not use its 7.5mm dimensions to manufacture or select the 7.62mm part. The separate reference attachment carrying a 630V note does not establish a 630V rating for either model; their applicable ratings are in the table above.

TB40-2KCM outline — TB40-2KCM/7.62: retained drawing has the same N×7.62 label on unequal spans. Contact span is 7.62 × (N−1)mm; total flange width is not established by those duplicated labels.

10.16mm power plugs

TB83 models use M4 connections for 0.5–10mm² conductors. Their 57A IEC rating and 52A UL B/C rating apply only to these models.

TB83-2K outline — TB83-2K/10.16: 27.55mm high, 39mm deep including the 14.7mm projection, and [10.16(N−1)+9.2]mm long.

TB83-2KM outline — TB83-2KM/10.16: flange overall length [10.16(N−1)+27.92]mm.

Ordering and dimensional tolerances

Ordering field	Selection
Product	Exact TB model, body suffix and pitch
Positions	02–24; the generic 02–99 legend does not extend these model ranges
Colour code	1 grey; 2 blue; 3 black; 4 green; 5 orange; 6 red; 7 transparent; 8 yellow; 9 white
Screw head	0 slotted; 1 cross-head
Clamping code	0 screw down; 1 screw up
Standard suffix	0A

Dimension range	Pitch tolerance	Nominal dimension tolerance
Over 0–30mm	±0.18mm	±0.20mm
Over 30–53mm	±0.20mm	±0.25mm
Over 53–70mm	±0.25mm	±0.30mm
Over 70–90mm	±0.30mm	±0.35mm
Over 90–115mm	±0.35mm	±0.44mm
Over 115–150mm	±0.44mm	±0.55mm
Over 150–200mm	±0.55mm	±0.70mm
Over 200–250mm	±0.70mm	±0.80mm
Over 250–320mm	±0.75mm	±0.90mm

Geometric tolerance	Range	Value
Perpendicularity	All stated dimensions	0.2mm
Straightness	All stated dimensions	0.2mm
Symmetry	0–10mm / over 10mm	0.2mm / 0.3mm
Parallelism	0–100mm / over 100–150mm	0.3mm / 0.5mm

Apply an explicit dimension tolerance before the general tables. Match the mating projection, latch, flange centres and terminal orientation to the intended counterpart and enclosure.