Test Leads and Instrumentation - Parts and Accessories
The Cliff™ range of test lead and instrument parts is made from high grade engineering plastics and precision metal parts. The parts comply with EN61010 section 2-031 where applicable. Parts are available for up to 10KV with various CAT ratings. All products conform to CE norms and comply with RoHS / REACH requirements.
The range comprises of:
- 4mm Ø test plugs and chassis sockets
- 2mm Ø test plugs and chassis sockets
- Unfused (cable end) test prods 1KV
- Fused (cable end) test prods 1+KV
- Crocodile clips - insulated and non insulated
- Standard assembled test leads
- Custom assembled test lead sets
See the PDF data sheet: Test Leads and Accessories ![]()
There is also the PDF data sheet: Cliff Testing Prods (Probes)![]()
Other Connectors
- DIN connectors including mini DIN plugs and sockets from 3 to 8 pin.
- 2.5mm and 3.5mm jack plugs and jack sockets in mono and stereo types.
- Phono sockets.
- Low voltage and DC power connectors. Models with Ø2.1 and Ø2.5 pins. PC mounted and hard-wired versions.
- Battery connectors of professional quality with tough moulded body.
- Fuseholders of bayonet and chassis mounting types with all approvals.
2mm and 4mm Plugs for Cable Connection
We have ten basic models with numerous options and variations. Please discuss complex plug rating issues with our engineering department.
Image |
Description |
Rated V |
Rated CAT |
|---|---|---|---|
|
P18 Unshrouded 2mm plug, supplied unassembled. Mates with S18 socket. |
30VAC 60VDC |
10A MAX |
|
P18S Shrouded 2mm plug, supplied unassembled. Mates with S18S socket. |
30VAC 60VDC |
10A MAX |
|
P14 and P15 Unshrouded 4mm plugs, supplied unassembled. |
600 |
10A II |
|
P14X Shrouded 4mm, nickel plated plug. Can be with or without rating. |
30VAC 60VDC |
|
|
P14XAS 4mm nickel plated plug with retractable shroud and cable restraint collet. |
1000 |
III |
|
P14XB 4mm, nickel plated plug with fixed shroud and cable restraint collet. |
1000 |
III |
|
P149X 4mm, tin / nickel plated, 90° plug with fixed shroud and cable restraint collet. |
1000 |
III |
|
P16 Shrouded 4mm, stackable, gold plated plug with pressed metal contact. P16N Shrouded 4mm, stackable, nickel plated plug with lantern style contact. Screw connection. |
300
600 |
II
II |
|
P17 Unshrouded 4mm, stackable, gold plated plug with pressed metal contact. P17N Unshrouded 4mm, stackable, nickel plated plug with lantern style contact. Screw connection. |
|
|
|
P20 4mm plugs, rated 5, 10 or 12KV for HV applications. Not intended for mains use so no CAT rating. Special connector for HV testing. |
5000 10000 12000 |
|
2mm and 4mm Chassis Sockets
Our range of chassis sockets are made from high grade engineering plastics. Metal parts are precision machined and nickel, silver or gold plated. The 4mm models have a variety of tag options. The most professional models are insert moulded. Mounting handware is supplied or available to order.
Image |
Description |
Rated V |
Rated I |
CAT |
|---|---|---|---|---|
|
S18 Unshrouded 2mm gold plated socket. Mates with P18 plug. |
600 |
10A |
III |
|
S14 Unshrouded, 4mm, nickel plated socket. Mates with most unshrouded plugs. |
30VAC 60VDC |
10A |
|
|
S16 Shrouded, 4mm, gold plated socket. Mates with shrouded or unshrouded plugs. |
1000 |
30A |
|
|
S16N Shrouded, 4mm, gold plated socket. Mates with shrouded or unshrouded plugs. Terminal options:
|
1000 |
24A 24A 32A 24A 32A 24A |
III |
Test Probes
Tests prods are developed to meet electrical testing requirements in a variety of applications and provide a reliable means of testing bare or loaded circuitries where a number of contact points must be accessed. They are designed for cable connection by soldering or crimping, depending on the metal inserts used. Crimping is the preferred type of connection, but it requires special tooling, so most customers buy probes ready assembled onto cable. These products are rated at 1KV CAT III. Ratings of 2, 3 or 4KV are possible on TPR/2 depending on the construction used and EN61010 norms applied. Standard colours colors are black and red. Other colours colors are subject to quantity.
-
TPR/1 Test probe, 1KV CAT III for direct cable connection. Unfused and supplied with a removable tip cover.
TPR/1C As TPR/1 but supplied unassembled, with a collet cable clamp.
-
TPR/1S Spiked test probe, 1KV CAT III. Unfused with a 4mm shrouded socket connection, to convert a 4mm shrouded plug into a test prod lead.
TPR/1SL Lantern contact test probe, 1KV CAT III. Unfused with a 4mm shrouded socket connection to convert a 4mm shrouded plug into a test prod lead.
-
TPR/2 Fused test probe, 1KV CAT III. For either a direct cable or a 4mm socket connection.
TPR/2S As TPR/2 but with a spring-loaded, retractable shroud, exposing a 4mm lantern probe.
TPR/2F A 4KV CAT II version of TPR/2.
TPR/2FS As TPR/2F but with a spring-loaded, retractable shroud.
-
TPR/2 Crocodile Clip Attachment For converting a TPR/2 probe into a fused crocodile clip for direct cable connection. 600V CAT III and 1KV CAT II.
P50, P75 and P160 series probes
Electrical specification: current rating 3A; contact resistance 50mΩ.
Tips: plunger is full hard beryllium copper, gold plated over nickel; barrel is brass, gold plated; spring is stainless steel.
Part Numbers: Probe - Tip - Spring Force - Plating (G=gold, N=nickel), eg. P50-A-080-G
See the PDF data sheet: Cliff Testing Prods (Probes)![]()
-
P50 Series Probe
-
P75 Series Probe
-
P160 Series Probe
-
Concave test probe tip A Long leads, terminals or wire wrap posts.
-
Spear point test probe tip B Lands, pads or plated through holes.
-
Spherical radius test probe tip D Gold edge fingers, pads, no indentations or marks.
-
Flat test probe tip G Gold edge fingers, pads, no indentations or marks.
-
Star test probe tip LM Lands, pads or plated through holes. Self cleaning.
-
Convex test probe tip F Lands, pads or plated through holes.
-
Four point crown test probe tip U Lands, pads leads or wire wrap posts. Self cleaning.
Part Number |
Pitch (mm) |
Mounting Hole (mm) |
Spring Pressure |
|---|---|---|---|
P50 - U - 120 - G |
1.27 |
0.9 |
120 g (1.18 N) |
P50 - A - 120 - G |
1.27 |
0.9 |
120 g (1.18 N) |
P50 - F - 120 - G |
1.27 |
0.9 |
120 g (1.18 N) |
P50 - B - 120 - G |
1.27 |
0.9 |
120 g (1.18 N) |
P75 - U - 128 - G |
1.9 |
1.35 |
128 g (1.25 N) |
P75 - A - 128 - G |
1.9 |
1.35 |
128 g (1.25 N) |
P75 - F - 128 - G |
1.9 |
1.35 |
128 g (1.25 N) |
P75 - B - 128 - G |
1.9 |
1.35 |
128 g (1.25 N) |
P160 - U - 110 - G |
2.54 |
1.75 |
110 g (1.08 N) |
P160 - U - 200 - G |
2.54 |
1.75 |
200 g (1.96 N) |
P160 - A - 110 - G |
2.54 |
1.75 |
110 g (1.08 N) |
P160 - A - 200 - G |
2.54 |
1.75 |
200 g (1.96 N) |
P160 - B - 110 - G |
2.54 |
1.75 |
110 g (1.08 N) |
P160 - B - 200 - G |
2.54 |
1.75 |
200 g (1.96 N) |
P160 - LM - 110 - G |
2.54 |
1.75 |
110 g (1.08 N) |
P160 - LM - 200 - G |
2.54 |
1.75 |
200 g (1.96 N) |
P160 - D - 110 - G |
2.54 |
1.75 |
110 g (1.08 N) |
P160 - D - 200 - G |
2.54 |
1.75 |
200 g (1.96 N) |
P160 - G - 110 - G |
2.54 |
1.75 |
110 g (1.08 N) |
P160 - G - 200 - G |
2.54 |
1.75 |
200 g (1.96 N) |
These are our most popular models, please contact our sales office for further variants. The minimum order quantity per model is 1000pcs.
Crocodile Clips - Insulated and Non-insulated
Our range of durable crocodile clips are made from high grade engineering plastics, with tin or nickel plated metal parts. They comply with EN61010 / CE. All clips open to a minimum of 25mm.
CRC/01 Basic rating 600V CAT III, (1000V CAT II). Available in black, red, blue, green, yellow and green / yellow. 4mm socket at rear accepts shrouded plug or unshrouded probe. Tongue at front to catch small wires or conductor pins.
CRC/01X Extended rear shroud version of CRC/01. When used, enables highest rating to be maintained. Curved jaws give good grip on busbars.
CRC/02 Miniature crocodile clip rated 300V CAT III. Used in applcations where access is restricted, especially telecommunications. 4mm socket at rear accepts shrouded or unshrouded plugs.
CRC/M All-metal, uninsulated crocodile clip generally used for earth testing. Curved jaws give good grip on busbars. A PVC boot in black or red is available as an option.
CRC/BON “Bed of Nails” crocodile clip with insulation piercing point. Mostly used in USA telecoms testing. Optionally available with just the piercing point. A range of coloured colored PVC boots is available.
Test Leads
Cliff™ test leads are semi custom made to order. We can combine any of our components to produce leads to suit most applications. We have three kinds of standard, double-insulated cable, rated 1KV (PVC), 5KV and 12KV (silicone). Available in black, red, green, blue and yellow.

Special Leadsets and Assemblies


We make a large number of customised customized leads and assemblies in our UK and China factories. These can combine standard power plugs with test leads, custom made instrument plugs, and other customised customized connectors. We can insert moulded cables into special configurations. We can proof test up to 20KV, testing 100% when needed. Since many test leads are safety critical parts, we aim for zero defects in all our test leads. We comply with the relevant specifications and all parts are CE and RoHS compliant.

Please contact CLIFF sales for more information.
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