Home / Wago / 2-conductor disconnect/test terminal block; with touch-proof test sockets; for DIN-rail 35 x 15 and 35 x 7.5; 4 mm²; CAGE CLAMP®; 4,00 mm²; gray

Available on request

2-conductor disconnect/test terminal block; with touch-proof test sockets; for DIN-rail 35 x 15 and 35 x 7.5; 4 mm²; CAGE CLAMP®; 4,00 mm²; gray

Name: 2-conductor disconnect/test terminal block; with touch-proof test sockets; for DIN-rail 35 x 15 and 35 x 7.5; 4 mm²; CAGE CLAMP®; 4,00 mm²; gray
Brand: Wago
SKU: 281-666

MPN: 281-666 · Brand: Wago

Price on request

12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

Ships via

Quick facts

Availability	Confirmed on request
Category	Rail-Mount Terminal Blocks
Lifecycle	active
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can 281-666 be shipped?

281-666 is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 281-666 in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 281-666 and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 281-666, subject to availability and destination.

<h2>Disconnect terminal block for test and measurement, 281 Series, gray</h2><br/><br/>This disconnect terminal block for test and measurement (item number 281-666) provides hassle-free electrical installations. Conductors can only be connected to this disconnect terminal block for test and measurement if their strip length is between 9 and 10 mm . Featuring conductor terminals along with CAGE CLAMP®, this product delivers reliable performance. Our highly-rated and maintenance-free CAGE CLAMP® connection makes it easy to connect all conductor types without having to prepare the conductor. For example, you don't need to crimp ferrules. This disconnect terminal block for test and measurement is suitable for conductor cross sections ranging from 0.08 mm² to 4 mm².<br/><br/><h3></h3>

Specifications

Electrical data - Ratings per IEC/EN

Nominal voltage (III/3)	400 V
Rated impulse withstand voltage (III / 3)	6 kV
Rated current	10 A
Legend (ratings)	(III / 3) ≙ Overvoltage category III / Pollution degree 3

Electrical data - Power Loss

Power loss, per pole (potential)	0.1 W
Rated current I<sub>N</sub> for power loss specification	10 A
Resistance value for specified, current-dependent power loss	0.001 Ω

Electrical data - General information

Wiring direction

Front-entry wiring

Connection data

Clamping units	2
Total number of potentials	2
Number of levels	1

Connection data - Connection 1

Connection technology	CAGE CLAMP®
Actuation type	Operating tool
Connectable conductor materials	Copper, Aluminum
Connectable conductor materials (note)	Terminating Aluminum ConductorsWAGO Spring-Clamp Terminal Blocks are suitable for solid aluminum conductors up to 4 mm²/12 AWG if WAGO “Alu-Plus” Contact Paste 249-130 is used for termination.“Alu-Plus” Contact Paste Advantages:Automatically destroys the oxide film during clamping.Prevents fresh oxidation at the clamping point.Prevents electrolytic corrosion between aluminum and copper conductors (in the same terminal block).Provides long-term protection against corrosion.Using terminal blocks with CAGE CLAMP® Spring Pressure Connection Technology, aluminum conductors must first be cleaned with a blade and then immediately inserted into the clamping units filled with “Alu-Plus” contact paste.It is also possible to apply WAGO “Alu-Plus” additionally on the whole surface of the aluminum conductor before termination.Please note that the nominal currents must be adapted to the reduced conductivity of the aluminum conductors:2.5 mm² = 16 A4 mm² = 22 A
Solid conductor	0.08 … 4 mm² / 28 … 12 AWG
Fine-stranded conductor	0.08 … 4 mm² / 28 … 12 AWG
Strip length	9 … 10 mm / 0.35 … 0.39 inches
Wiring direction	Front-entry wiring

Physical data

Width	6 mm / 0.236 inches
Height	86 mm / 3.386 inches
Depth from upper-edge of DIN-rail	53.5 mm / 2.106 inches

Mechanical data

Design	horizontal type
Mounting type	DIN-35 rail
Marking level	Center marking

Material data

Note (material data)	Information on material specifications can be found here
Color	gray
Material group	I
Insulation material (main housing)	Polyamide (PA66)
Flammability class per UL94	V0
Fire load	0.217 MJ
Weight	14 g