Crimp
Open Crimp

3080 / 4RD 933 332-397

HELLA 3080 12V Five-Pin Changeover Relay connections

Review the HELLA 3080 12V Five-Pin Changeover Relay connections, setup and installation requirements. This overview does not calculate cable or protection sizes.

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Compatible systems
12 V

Connection overview

5-pin relay · NO / NC connections.

See how this component fits into a system. Use the manufacturer’s installation instructions for the complete connections.

HELLA 3080 12V Five-Pin Changeover Relay connection overview with 7 components: AGM 100, ATC inline fuse holder, 5-pin relay · NO / NC, Load A · 1A, Load B · 2A, ATC inline fuse holder, Momentary (ON)–OFF. 10 cable connections. Crossings are not junctions.AGM 100 + to ATC inline fuse holder IN. ATC inline fuse holder OUT to 5-pin relay · NO / NC 30 COM. 5-pin relay · NO / NC 87a NC to Load A · 1A +. Load A · 1A − to AGM 100 −. 5-pin relay · NO / NC 87 NO to Load B · 2A +. Load B · 2A − to AGM 100 −. AGM 100 + to ATC inline fuse holder IN. ATC inline fuse holder OUT to Momentary (ON)–OFF COM. Momentary (ON)–OFF NO to 5-pin relay · NO / NC 86 COIL +. 5-pin relay · NO / NC 85 COIL − to AGM 100 −AGM 100 + to ATC inline fuse holder INATC inline fuse holder OUT to 5-pin relay · NO / NC 30 COM5-pin relay · NO / NC 87a NC to Load A · 1A +Load A · 1A − to AGM 100 −5-pin relay · NO / NC 87 NO to Load B · 2A +Load B · 2A − to AGM 100 −AGM 100 + to ATC inline fuse holder INATC inline fuse holder OUT to Momentary (ON)–OFF COMMomentary (ON)–OFF NO to 5-pin relay · NO / NC 86 COIL +5-pin relay · NO / NC 85 COIL − to AGM 100 −100 Ah AGM. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.AGM 100++−−ATC inline fuse holder. Illustrative inline holder, 0.1 m from battery. Verify the installed holder, fuse voltage and interrupt rating. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.ATC inline fuse holderINOUTHELLA 3080 12V Five-Pin Changeover Relay. HELLA 3080 contact layout. Select Rest or Energized manually; coil voltage, 140 mA coil draw and automatic operation are not calculated. Check both contact positions separately. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.5-pin relay · NO / NC30 COM87 NO87 NO87a NC87a NC86 COIL +86 COIL +85 COIL −85 COIL −Example load 1A. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.Load A · 1A+−Example load 2A. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.Load B · 2A+−ATC inline fuse holder. Illustrative inline holder, 0.1 m from battery. Verify the installed holder, fuse voltage and interrupt rating. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.ATC inline fuse holderINOUTBlue Sea 4151 Momentary SPST Switch. This switch shows the coil wiring. Selecting Held does not automatically change the relay's selected contact state. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.Momentary (ON)–OFFCOMNO
HELLA 3080 12V Five-Pin Changeover Relay connection overview with 7 components: AGM 100, ATC inline fuse holder, 5-pin relay · NO / NC, Load A · 1A, Load B · 2A, ATC inline fuse holder, Momentary (ON)–OFF. 10 cable connections. Crossings are not junctions.Five-pin changeover relay with isolated coil and contact circuits. Select Rest or Energized manually; the schematic does not automatically actuate the contacts from coil voltage or include coil current in the energy budget. Verify both throw circuits and their protection. Connection overview only. Cable lengths are placeholders; use the complete manufacturer diagram to select conductors and protection. No automatic fuse or cable-size recommendation is supplied by this example.
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Technical reference

Specifications and terminal map.

Check the model, ratings and connection points against your own unit before choosing installation hardware.

Catalog specification

12 V five-pin relay: rest connects 30 to 87a (20 A NC); energized connects 30 to 87 (30 A NO). Pins 85 and 86 show coil wiring only. Select contact states manually; 140 mA coil consumption and switching transients are not simulated.

Compatible systems
12 V

Terminal map

Catalog connection points, current direction and planning limits. Check the manufacturer's pinout and connector ratings before installation.

30 COM

neutral · bidi

30 A

87 NO

neutral · bidi

30 A

87a NC

neutral · bidi

20 A

86 COIL +

signal · input

—

85 COIL −

signal · input

—

A dash means a current rating is not specified here.

Sources and sizing method

Equipment specifications. Model details, ratings and terminal roles come from the catalog. Check your unit’s label and current manufacturer documentation for its exact revision.

Connection overview. This diagram explains the connection arrangement; it does not calculate cable sizes or protection for the installation. Follow the manufacturer’s complete wiring and protection instructions.

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