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Home / Wago / Rail-Mount Terminal Blocks / Wago 821-509
Wago

Wago 821-509

Control Signal Terminal Strip; E.ON Version; according to § 14a EnWG; 2,50 mm²; gray

MPN
821-509
Price and lead time confirmed within 1 business day
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  1. We check stock, condition and lead time
  2. You get a written quote by email
  3. Approve it and we ship — in-stock parts within 1 business day
  • 12-month warranty (new) · 3-month (used/refurbished)
  • 30-day returns, no restocking fee on unused parts
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What is the Wago 821-509?

Control Signal Terminal Strips per § 14a EnWG

Due to the Energy Industry Act (EnWG), system operators whose connection power is greater than 4.2 kW (usually wallboxes or heat pumps for private households) are obligated to install throttle devices that can be controlled by the grid operator in an emergency to ensure grid stability in the event of excessive power consumption. For this purpose, WAGO offers the Control Signal Terminal Strips according to § 14a EnWG as an interface between consumers and grid operators, which were developed in cooperation with grid operators according to the valid TABs. They offer the advantages of a uniform structure, standards and meet the requirements for clear separation of load and control current.

These sets are delivered ready for installation and without a DIN-rail for the end user. They are developed for the German energy market.

Specifications

Electrical data - Ratings per IEC/EN

Ratings perIEC/EN 60947-7-1
Nominal voltage (III/3)400 V
Rated impulse withstand voltage (III / 3)6 kV
Rated current16 A
Legend (ratings)(III / 3) ≙ Overvoltage category III / Pollution degree 3
Ratings perIEC/EN 60947-7-1 / IEC/EN 60947-7-1 / IEC/EN 60947-7-1
Overvoltage categoryIII / III / II
Pollution degree3 / 2 / 2
Nominal voltage400 V
Rated impulse withstand voltage6 kV
Rated current16 A

Electrical data - Ratings per UL

Approvals perUL 1059
Rated voltage UL (Use Group B)300 V
Rated current UL (Use Group B)15 A
Rated voltage UL (Use Group C)300 V
Rated current UL (Use Group C)15 A
Approvals perUL 1059 / UL 1059 / UL 1059
Use groupB / C / D
Rated voltage300 V / 300 V
Rated current15 A / 15 A

Electrical data - Ratings per CSA

Approvals perCSA 22.2 No 158
Rated voltage CSA (Use Group B)300 V
Rated current CSA (Use Group B)15 A
Rated voltage CSA (Use Group C)300 V
Rated current CSA (Use Group C)15 A
Approvals perCSA 22.2 No 158 / CSA 22.2 No 158 / CSA 22.2 No 158
Use groupB / C / D
Rated voltage300 V / 300 V
Rated current15 A / 15 A

Electrical data - Ex information

Ratings perATEX: PTB 20 ATEX 1007 U / IECEx: PTB 20.0013U (Ex ec IIC Gc)
Rated voltage EN (Ex e II)440 V
Rated current (Ex e II)17 A

Electrical data - Power Loss

Power loss, per pole (potential)0.341 W
Rated current I<sub>N</sub> for power loss specification16 A
Resistance value for specified, current-dependent power loss0.001 Ω

Electrical data - General information

Wiring directionFront-entry wiring

Connection data

Clamping units12
Total number of potentials6
Number of levels1

Connection data - Connection 1

Connection technologyPush-in CAGE CLAMP®
Actuation typePush-button
Connectable conductor materialsCopper
Nominal cross-section2.5 mm²
Solid conductor0.25 … 4 mm² / 22 … 12 AWG
Solid conductor; push-in termination0.75 … 4 mm² / 18 … 12 AWG
Fine-stranded conductor0.25 … 4 mm² / 22 … 12 AWG
Fine-stranded conductor; with insulated ferrule0.25 … 2.5 mm² / 22 … 14 AWG
Fine-stranded conductor; with ferrule; push-in termination1 … 2.5 mm² / 18 … 14 AWG
Note (conductor cross-section)Depending on the conductor characteristic, a conductor with a smaller cross-section can also be inserted via push-in termination.
Strip length10 … 12 mm / 0.39 … 0.47 inches
Wiring directionFront-entry wiring

Physical data

Width44.2 mm / 1.74 inches
Height66.1 mm / 2.602 inches
Depth from upper-edge of DIN-rail32.9 mm / 1.295 inches
Depth39.5 mm / 1.555 inches

Mechanical data

Mounting typeDIN-35 rail
Marking levelCenter/side marking

Material data

Note (material data)Information on material specifications can be found here
Material groupI
Insulation material (main housing)Polyamide (PA66)
Flammability class per UL94V0
Fire load1.326 MJ
Actuator colororange
Weight55.6 g

Environmental requirements

Processing temperature-35 … +85 °C
Continuous operating temperature-60 … +105 °C

Commercial data

PU (SPU)1 pcs
Packaging typeBox
Country of originDE
GTIN4066966781250
Customs tariff number85369010000

Product Classification

ETIM 9.0EC000902
ETIM 10.0EC000902
ECCNNO US CLASSIFICATION

Environmental Product Compliance

RoHS Compliance StatusCompliant,No Exemption

821-509: frequently asked questions

When can 821-509 be shipped?

821-509 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 821-509 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 821-509 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 821-509, subject to availability and destination.

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Wago 821-509Price and lead time confirmed within 1 business day
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