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721-104/037-000
Pluggable Terminal Block, 5 mm, 4 Ways, 28 AWG, 12 AWG, 2.5 mm², Clamp
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: WAGO
- Product type: Pluggable Terminal Blocks
- SVHC: No SVHC (04-Feb-2026)
- Pitch Spacing: 5mm
- Product Range: MCS MIDI 721 Series
- Rated Current: 16A
- Rated Voltage: 630V
- No. of Positions: 4Ways
- Wire Size AWG Max: 12AWG
- Wire Size AWG Min: 28AWG
- Conductor Area CSA: 2.5mm²
- Wire Connection Method: Clamp
| Delivery and price | |
|---|---|
| Units per pack | 250 |
| Price | 3.21 € |
| Current stock | 100+ |
| Lead time | 30 days |
Datasheet
# Data Sheet | Item Number: 721-104/037-000 1-conductor female connector; CAGE CLAMP®; 2.5 mm²; Pin spacing 5 mm; 4-pole; 100% protected against mismating; Lateral locking levers; 2,50 mm²; light gray https://www.wago.com/721-104/037-000 # Color: light gray Similar to illustration 2,2 6 - I; O HAL!Paint ULq Vy |Utel a 86 57 8 12,2 L 14,3 Le Dimensions in mm L = pole no. x pin spacing2-pole female connectors – one latch only . Female connector, 721 Series, with 5 mm pin spacing Enjoy convenient electrical installations with this female connector (item number 721-104/037-000). Strip lengths must be between 8 and 9 mm when connecting conductors to this female connector. Featuring one conductor terminal along with CAGE CLAMP®, this connector is highly versatile. Our CAGE CLAMP® connection provides a secure and maintenance-free way to connect all types of conductors. You do not need to prepare the conductor in any way, such as crimping ferrules. The item's dimensions are (36.6 x 14.3 x 29.6) mm (width x height x depth). Depending on the type of conductor, this female connector is suitable for conductor cross sections ranging from 0.08 mm² to 2.5 mm². The contact surface is coated with tin. Page 1/8 Version 13.03.2026 Continued on next page # Data Sheet | Item Number: 721-104/037-000 https://www.wago.com/721-104/037-000 |Notes|||||||||| |---|---|---|---|---|---|---|---|---|---| |Safety Information||||||The_MCS – MULTI CONNECTION SYSTEM_includes connectors without breaking capaci|||| |||||||ty in accordance with DIN EN 61984. When used as intended, these connectors must|||| |||||||not be connected/disconnected when live or under load.When used as intended, these|||| |||||||connectors must not be connected/disconnected when live||or under load. The circuit|| |||||||design should ensure header pins, which can|be touched, are not live when||unmated.| |Variants:||||||Other pole numbers|||| |||||||Gold-plated or partially gold-plated contact surfaces|||| |||||||Other versions (or variants) can be requested|from WAGO Sales or configured at https://||| |||||||configurator.wago.com/.|||| |.|||||||||| |Electrical data|||||||||| |Ratings per|||IEC/EN 60664-1|||Approvals per||UL 1059|| |Overvoltage category||III|III|II||Use group|B|C|D| |Pollution degree||3|2|2||Rated voltage|300 V|-|300 V| |Nominal voltage||320 V|320 V|630 V||Rated current<br>.|15 A|-|10 A| |Rated impulse withstand voltage||4 kV|4 kV|4 kV|||||| |Rated current||16 A|16 A|16|A||||| |.|||||||||| |Ratings||||||Approvals per||CSA|| |Approvals per|||UL 1977|||Use group|B|C|D| |Rated voltage|||600 V|||Rated voltage|300 V|-|300 V| |Rated current|||15 A|||Rated current<br>.|15 A|-|10 A| |.|||||||||| |Connection Data|||||||||| |Clamping units|4|||||Connection 1|||| |Total number of potentials|4|||||Connection technology|CAGE CLAMP®||| |Number of connection types|1|||||Actuation type|Operating tool||| |Number of levels|1|||||Actuation direction 1|Operation parallel to conductor entry||| |.||||||Actuation direction 2|Operation perpendicular to conductor||| ||||||||entry||| |||||||Solid conductor|0.08 … 2.5 mm² / 28 … 12 AWG||| |||||||Fine-stranded conductor|0.08 … 2.5 mm² / 28 … 12 AWG||| |||||||Fine-stranded conductor; with insulated|0.25 … 1.5 mm²||| |||||||ferrule|||| |||||||Fine-stranded conductor; with uninsula|0.25 … 2.5 mm²||| |||||||ted ferrule|||| |||||||Strip length|8 … 9 mm / 0.31 … 0.35 inches||| |||||||Pole number|4||| |||||||Conductor entry direction to mating di|0 °||| |||||||rection|||| |||||||.|||| |Physical data|||||||||| |Pin spacing||||||5 mm / 0.197 inches|||| |Width||||||36.6 mm / 1.441 inches|||| |Height||||||14.3 mm / 0.563 inches|||| |Depth||||||29.6 mm / 1.165 inches|||| |.|||||||||| |Page 2/8|||||Version|13.03.2026||Continued on next page|| Data Sheet | Item Number: 721-104/037-000 https://www.wago.com/721-104/037-000 ||Mechanical data|||| |---|---|---|---|---| ||Variable coding||Yes|| ||Anti-rotation protection||Yes|| |.||||| ||Plug-in connection|||| ||Contact type (pluggable connector)||Female connector/socket|| ||Connector (connection type)||for conductor|| ||Mismating protection||Yes|| ||Locking of plug-in connection||Locking lever|| |.||||| ||Material data|||| ||Note (material data)||Information on material specifications can be found here|| ||Color||light gray|| ||Material group||I|| ||Insulation material (main housing)||Polyamide (PA66)|| ||Flammability class per UL94||V0|| ||Clamping spring material||Chrome-nickel spring steel (CrNi)|| ||Contact material||Copper alloy|| ||Contact Plating||Tin|| ||Fire load||0.134 MJ|| ||Weight||8.7 g|| |.||||| ||Environmental requirements|||| ||Limit temperature range|-60 … +100 °C|Environmental Testing|| ||Processing temperature|-35 … +60 °C|Test specification:|DIN EN 50155 (VDE 0115-200):2022-06| ||||Railway applications –|| |.|||Rolling stock –|| ||||Electronic equipment|| ||||Test procedure:|DIN EN 61373 (VDE 0115-0106):2011-04| ||||Railway applications –|| ||||Rolling stock equipment –|| ||||Vibration and shock tests|| ||||Spectrum/Mounting location|Service life test, Category 1, Class A/B| ||||Functional test with noise-like oscillati|Test passed according to Section 8 of| ||||ons|the standard| ||||Frequency|f1= 5 Hz to f2= 150 Hz| ||||Acceleration|0.101g (highest test level used for all| |||||axes)| ||||Test duration per axis|10 min.| ||||Test directions|X, Y and Z axes| ||||Monitoring of contact faults and interrup|Passed| ||||tions|| ||||Voltage drop measurement before and|Passed| ||||after each axis|| ||||Simulated service life test through incre|Test passed according to Section 9 of| ||||ased levels of noise-like oscillations|the standard| ||||Frequency|f1= 5 Hz to f2= 150 Hz| ||||Acceleration|0.572g (highest test level used for all| |||||axes)| ||||Test duration per axis|5 h| ||||Test directions|X, Y and Z axes| ||||Extended testing: Monitoring of contact|Passed| ||||faults and interruptions|| ||||Extended testing: Voltage drop measure|Passed| ||||ment before and after each axis|| ||||Shock test|Test passed according to Section 10 of| |||||the standard| ||||Shock pulse form|Half sine| Page 3/8 Version 13.03.2026 Continued on next page # Data Sheet | Item Number: 721-104/037-000 https://www.wago.com/721-104/037-000 ~~a~~ Environmental Testing Acceleration 5g (highest test level used for all axes) |Environmental Testing||5g (highest test level used for all axes)|5g (highest test level used for all axes)|||| |---|---|---|---|---|---|---| |Acceleration||5g (highest test level used for all axes)|5g (highest test level used for all axes)|||| |Shock duration||30 ms||||| |Number of shocks (per axis)||3 pos. und 3 neg.||||| |Test directions||X, Y and Z axes||||| |Extended testing: Monitoring of contact||Passed||||| |faults and interruptions||||||| |Extended testing: Voltage drop measure||Passed||||| |ment before and after each axis||||||| |Vibration and shock stress for rolling||Passed||||| |stock equipment||||||| |.||||||| |Commercial data<br>SS—-—-—E—E—E—E—E—EeEeEeEeEeEEeEEEEEEEEEe||||||| |Product Group|||3 (Multi Conn. System)|3 (Multi Conn. System)||| |PU (SPU)|||50 pcs|||| |Packaging type|||Box|||| |Country of origin|||DE|||| |GTIN|||4044918353755|||| |Customs tariff number|||85366990990|||| |.||||||| |Product Classification<br>UNSPSC<br>EEE|EEE|EEE|39121409||EEE|| |eCl@ss 10.0|||27-44-03-09|||| |eCl@ss 9.0|||27-44-03-09|||| |ETIM 9.0|||EC002638|||| |ETIM 10.0|||EC002638|||| |ECCN|||NO US CLASSIFICATION|||| |.||||||| |Environmental Product Compliance<br>SS—-—-—E—E—E—E—E—EeEeEeEeEeEEeEEEEEEEEEe||||||| |RoHS Compliance Status|||Compliant,No Exemption|||| |.||||||| |Approvals / Certificates<br>General approvals<br>~~ae~~||~~ae~~|~~ae~~|Declarations of conformity and manufacturer's declarations<br>ee||Declarations of conformity and manufacturer's declarations<br>ee| |G ka|WW|||2)||| |Approval|Standard|Certificate Name||Approval|Standard|Certificate Name| |CB|IEC 61984|NL-113351||Railway|-|Railway Ready| |DEKRA Certification B.V.||||WAGO GmbH & Co. KG||| |CSA|C22.2|1466354||||| |DEKRA Certification B.V.|||.|||| |KEMA/KEUR|EN 61984|71-130478 REV.1||||| |DEKRA Certification B.V.||||||| |UL|UL 1977|E45171||||| |Underwriters Laboratories||||||| |Inc.||||||| |UL|UL 1059|E45172||||| |Underwriters Laboratories||||||| |Inc.||||||| |.||||||| |Page 4/8|||Version 13.03.2026|||Continued on next page| |.||| |---|---|---| |Product Classification<br>UNSPSC<br>EEE|39121409|EEE| |eCl@ss 10.0|27-44-03-09|| |eCl@ss 9.0|27-44-03-09|| |ETIM 9.0|EC002638|| |ETIM 10.0|EC002638|| |ECCN|NO US CLASSIFICATION|| |.||| |Environmental Product Compliance<br>SS—-—-—E—E—E—E—E—EeEeEeEeEeEEeEEEEEEEEEe||| |RoHS Compliance Status|Compliant,No Exemption|Compliant,No Exemption| |.||| |Approvals / Certificates<br>General approvals<br>~~ae~~|Declarations of conformity and manufacturer's declarations|Declarations of conformity and manufacturer's declarations<br>ee| # ee - Data Sheet | Item Number: 721-104/037-000 https://www.wago.com/721-104/037-000 Approvals for marine applications - ~~——~~ |Approval<br>Standard|Certificate Name|Certificate Name|||||| |---|---|---|---|---|---|---|---| |ABS<br>-|24-0095975-PDA||||||| |American Bureau of Ship|||||||| |ping|||||||| |BV<br>IEC 60998|11915/E0 BV||||||| |Bureau Veritas S.A.|||||||| |DNV<br>-|TAE000016Z||||||| |DNV GL SE|||||||| |PRS<br>-|TE/1095/880590/23||||||| |Polski Rejestr Statków|||||||| |.|||||||| |Downloads<br>~~hee~~|||||||| |Environmental Product Compliance|||||||| |Compliance Search|||||||| |Environmental Product|||||||| |Compliance|||||||| |721-104/037-000|||||||| |.|||||||| |Documentation|||||||| |Additional Information|||||||| |Technical Section<br>03.04.2019<br>pdf<br>2027.26 KB<br>~~a~~|||||||| |.|||||||| |CAD/CAE-Data|||||||| |CAD data|||||CAE data||| |2D/3D Models<br>721-104/037-000<br>~~ee e~~||||EPLAN Data Portal<br>721-104/037-000<br>~~es~~|||| |.|||||ZUKEN Portal<br>721-104/037-000||~~NA~~| ||||||.||| |1 Compatible Products<br>~~Tee~~|||||||| |1.1 System counterpart|||||||| |1.1.1 Male connector/plug|||||||| |&%|.||||;||| |Item No.: 721-604|Item No.: 721-434/001-000|||Item No.: 721-134/001-000|||| |1-conductor male connector; CAGE|THT male header; 1.0 x 1.0 mm solder pin;|||THT male header; 1.0 x 1.0 mm solder pin;|||| |CLAMP®; 2.5 mm²; Pin spacing 5 mm; 4-|angled; 100% protected against misma|||straight; 100% protected against misma|||| |pole; 100% protected against mismating;|ting; Pin spacing 5 mm; 4-pole; light gray|||ting; Pin spacing 5 mm; 4-pole; light gray|||| |2,50 mm²; light gray|||||||| |.|||||||| |Page 5/8|||Version 13.03.2026|||Continued on next page|| **==> picture [557 x 824] intentionally omitted <==** **----- Start of picture text -----**<br> ||||| |---|---|---|---| |Data Sheet | Item Number: 721-104/037-000| |https://www.wago.com/721-104/037-000| |a|wWAGco| |1.2 Optional Accessories| |1.2.1 Cover| |1.2.1.1 Cover| |ata|||ta||| |Item No.: 231-668|Item No.: 231-669| |Lockout caps; for covering unused clam|Lockout caps; for covering unused clam| |ping units; gray|ping units; orange| |.| |1.2.2 Ferrule| |1.2.2.1 Ferrule| |Q‘| |Item No.: 216-301|Item No.: 216-302|Item No.: 216-201|Item No.: 216-101| |Ferrule; Sleeve for 0.25 mm² / AWG 24; in|Ferrule; Sleeve for 0.34 mm² / 22 AWG; in|Ferrule; Sleeve for 0.5 mm² / 20 AWG; in|Ferrule; Sleeve for 0.5 mm² / AWG 22; un| |sulated; electro-tin plated; yellow|sulated; electro-tin plated; light turquoise|sulated; electro-tin plated; electrolytic|insulated; electro-tin plated; silver-colo| |copper; acc. to DIN 46228, Part 4/09.90;|red| |white| |l|A||| |Item No.: 216-202|Item No.: 216-102|Item No.: 216-203|Item No.: 216-103| |Ferrule; Sleeve for 0.75 mm² / 18 AWG; in|Ferrule; Sleeve for 0.75 mm² / AWG 20;|Ferrule; Sleeve for 1 mm² / AWG 18; insu|Ferrule; Sleeve for 1 mm² / AWG 18; unin| |sulated; electro-tin plated; gray|uninsulated; electro-tin plated; silver-co|lated; electro-tin plated; red|sulated; electro-tin plated| |lored| |H|[| |Item No.: 216-204|Item No.: 216-104| |Ferrule; Sleeve for 1.5 mm² / AWG 16; in|Ferrule; Sleeve for 1.5 mm² / AWG 16; un| |sulated; electro-tin plated; black|insulated; electro-tin plated; silver-colo| |red| |.| |1.2.3 Insulation stop| |1.2.3.1 Insulation stop| |Item No.: 231-670|Item No.: 231-671|Item No.: 231-672| |Insulation stop; 0.08-0.2 mm² / 0.2 mm²|Insulation stop; 0.25 - 0.5 mm²; light gray|Insulation stop; 0.75 - 1 mm²; dark gray| |“s”; white| |.| |1.2.4 Jumper| |1.2.4.1 Jumper| |4|ee| |Item No.: 231-902|Item No.: 231-903| |Jumper; for conductor entry; 2-way; insu|Jumper; for conductor entry; 3-way; insu| |lated; gray|lated; gray| |.| |Page|6/8|Version 13.03.2026|Continued on next page| **----- End of picture text -----**<br> Data Sheet | Item Number: 721-104/037-000 https://www.wago.com/721-104/037-000 - 1.2.5 Marking 1.2.5.1 Marking strip |Item No.: 210-331/500-103|Item No.: 210-332/500-202|||Item No.: 210-332/500-205|Item No.: 210-331/500-104|Item No.: 210-331/500-104| |---|---|---|---|---|---|---| |Marking strips; as a DIN A4 sheet; MAR|Marking strips; as a DIN A4 sheet; MAR|Marking strips; as a DIN A4 sheet; MAR||Marking strips; as a DIN A4 sheet; MAR|Marking strips; as a DIN A4 sheet; MAR|| |KED; 1-12 (300x); Height of marker strip:|KED; 1-16 (160x); Height of marker strip:|||KED; 1-32 (80x); Height of marker strip: 3|KED; 13-24 (300x); Height of marker strip:|| |2.3 mm/0.091 in; Strip length 182 mm;|3 mm; Strip length 182 mm; Horizontal|||mm; Strip length 182 mm; Horizontal mar|2.3 mm/0.091 in; Strip length 182 mm;|| |Horizontal marking; Self-adhesive; white|marking; Self-adhesive; white|||king; Self-adhesive; white|Horizontal marking; Self-adhesive; white|| |Item No.: 210-332/500-204|Item No.: 210-332/500-206|||||| |Marking strips; as a DIN A4 sheet; MAR|Marking strips; as a DIN A4 sheet; MAR|Marking strips; as a DIN A4 sheet; MAR||||| |KED; 17-32 (160x); Height of marker strip:|KED; 33-48 (160x); Height of marker strip:|||||| |3 mm; Strip length 182 mm; Horizontal|3 mm; Strip length 182 mm; Horizontal|||||| |marking; Self-adhesive; white|marking; Self-adhesive; white|||||| |.||||||| |1.2.6 Strain relief||||||| |1.2.6.1 Strain relief housing||||||| |Item No.: 232-604||||||| |Strain relief housing; for female and male||||||| |connectors; 2 parts; Pin spacing 5 mm; 4-||||||| |pole; gray||||||| |.||||||| |1.2.7 Test and measurement||||||| |1.2.7.1 Testing accessories||||||| |4||||||| |Item No.: 210-136|Item No.: 231-661|||||| |Test plug; 2 mm Ø; with 500 mm cable; red|Test plugs for female connectors; for 5|Test plugs for female connectors; for 5||||| ||mm and 5.08 mm pin spacing; 2,50 mm²;|||||| ||light gray|||||| |.||||||| |1.2.8 Tool||||||| |1.2.8.1 Operating tool||||||| |Item No.: 209-132<br>Operating tool; for connecting comb-style|Item No.: 209-130<br>Operating tool; made of insulating materi|Operating tool; made of insulating materi||Item No.: 231-291<br>Operating tool; made of insulating materi<br>~~en~~|Item No.: 231-131<br>Operating tool; made of insulating materi|| |jumper bar; made of insulating material; 2-|al; 1-way; for 264 Series (1-/2-way), 280,|||al; 1-way; loose; red|al; 1-way; loose; white|| |way; natural|281 Series (up to 3-way); natural|||||| |||||||| |Item No.: 280-432|Item No.: 280-433|||Item No.: 280-434||| |Operating tool; made of insulating materi|Operating tool; made of insulating materi|Operating tool; made of insulating materi||Operating tool; made of insulating materi||| |al; 2-way; white|al; 3-way; white|||al; 4-way; white||| |.||||||| |Page 7/8||Version 13.03.2026||||Continued on next page| Data Sheet | Item Number: 721-104/037-000 https://www.wago.com/721-104/037-000 - Installation Notes Conductor termination ’ - —bh ae , FA 4 = - 7 J 2 - ANY oes = ? —~ ig - ey ‘ P - Inserting a conductor via 3.5 mm screw Inserting a conductor via 3.5 mm screw Inserting a conductor via operating tool. driver – CAGE CLAMP® actuation parallel driver – CAGE CLAMP® actuation perpen to conductor entry. dicular to conductor entry. - . Coding | - i Nagy) Nd - Coding a female connector by removing coding finger(s). - . Testing unk 4 - = gat : — = a. | - patty d we ‘ oa oeaSw - , Ww - Testing perpendicular to conductor entry with 2 or 2.3 mm Ø test plug – female connector with CAGE CLAMP® – via inte grated test ports - . Installation Male connector with strain relief plate Strain relief housing shown with a male connector equipped with CAGE CLAMP® - . Subject to changes. Please also observe the further product documentation! Current addresses can be found at:: www.wago.com Page 8/8 Version 13.03.2026
Updated at June 10, 2026
For over six decades, WAGO has been a pioneering force in electrical engineering and automation, globally recognized for inventing the revolutionary spring CAGE CLAMP® technology. By leading the way in Spring Pressure Connection Technology, WAGO provides secure, maintenance-free connections that significantly reduce wiring time while ensuring consistent contact reliability that is independent of operator skill. Our extensive WAGO portfolio focuses heavily on their industry-leading interconnection solutions. We offer a vast array of DIN rail terminal blocks, wire-to-board terminal blocks, and pluggable terminal block headers and sockets. To support these core components, our selection also includes hundreds of essential terminal block accessories, markers, and specialized fused terminal blocks, ensuring you have everything required for safe and efficient wiring. Beyond foundational connectivity, WAGO excels in interface and automation technology. Our catalog features a curated selection of WAGO power relays, AC/DC converters, and process controllers. From robust power distribution to sophisticated system interlinks, WAGO delivers the meticulously engineered components necessary to build highly reliable, future-ready industrial solutions.
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