ZJ18F Series

ZJ18F-B Miniature General Purpose Relay

Model ZJ18F-B

2/3/4-pole changeover, built-in LED, decorative cover plate, RoHS

Configuration2-/3-Pole (2C / 3C)
ModelZJ18F-2PB / -3PB
Contact arrangement2 or 3 × changeover
Contact materialSilver alloy (Ag alloy)
Rated voltage250 V AC / 30 V DC

Product Information

The ZJ18F-B is the covered version of the ZJ18F series — a slim miniature intermediate-power / general-purpose relay with blade (PCB / socket) terminals in 2-, 3- and 4-pole versions, fitted with a protective top cover (lid) for dust protection and a clean panel finish. Silver-alloy contacts, current ratings up to 12 A, for control panels, switchgear, HVAC and OEM automation.

ZJ18F-B miniature power relay with cover

Key features

Protective top cover (lid, “-B”) — dust protection and a clean panel finish
No test button (see ZJ18FT-B for cover + test button)
2-, 3- and 4-pole (2 / 3 / 4 Form C) versions
Silver-alloy (Ag alloy) contacts — high current capacity, low contact resistance, long stable life
Contact load: 2/3-pole 6.6 A standard, 10 A (H) or 12 A (G); 4-pole 5 A standard or 6 A (G) — 250 V AC / 30 V DC
Built-in LED option (L) — AC red / DC green; coil-protection diode (D) or varistor (C) optional
Socket-type or PCB mounting — mounts on matching DIN-rail screw socket 18F-4Z-C4 (black or grey); plastic retaining hook 18F-S36, tool-free
Wide coil range 6–110 V DC / 6–240 V AC; high sensitivity (coil power ~0.9 W / ~1.2 VA)
Body ~13.2 × 27.7 × 35.5 mm, weight ~35 g; −40…+70 °C; RoHS compliant; UL, CE, TÜV

Plug-in system — relay, matching DIN-rail screw socket (18F-4Z-C4), snap-on LED module (LM-CF), plastic retaining hook (18F-S36) and marker plate (18F-T):

ZJ18F-B relay, socket, LED module, hook and marker plate

Characteristics

Configuration	2-/3-Pole (2C / 3C)
Model	ZJ18F-2PB / -3PB
Contact arrangement	2 or 3 × changeover
Contact material	Silver alloy (Ag alloy)
Rated load (resistive)	6.6 A std · 10 A (H) · 12 A (G)250 V AC / 30 V DC
Initial contact resistance	≤100 mΩ (standard) / ≤50 mΩ (high-current H/G)
Rated voltage	250 V AC / 30 V DC
Pick-up voltage	≤75% (DC) / ≤80% (AC) of rated coil voltage
Drop-out voltage	≥10% (DC) / ≥30% (AC) of rated coil voltage
Electrical endurance	1×10⁵ operations
Mechanical endurance	1×10⁷ operations
Operate time	≤20 ms (at rated voltage)
Release time	≤20 ms
Coil power	approx. 0.9 W (DC) / 1.2 VA (AC)
Coil voltage	6–110 V DC / 6–240 V AC
Dielectric — between open contacts	1000 V AC, 50/60 Hz, 1 min
Dielectric — between poles	2000 V AC, 50/60 Hz, 1 min
Dielectric — contacts to coil	2000 V AC, 50/60 Hz, 1 min
Insulation resistance	≥1000MΩ (500VDC)
Shock resistance	1000 m/s²
Vibration resistance	10–55 Hz, double amplitude 1.0 mm
Ambient temperature	−40 °C … +70 °C
Humidity	5% … 85% RH
Atmospheric pressure	86–106 kPa
Termination / mounting	Socket-type or PCB (print-board) mounting
Enclosure	RT II / IP20
Unit weight	approx. 35 g
Options (ordering suffix)	L = LED (AC red / DC green) · D = rectifier diode · C = varistor · 1 = PCB mount · H = high current (2/3P 10 A) · G = extra-high current (2/3P 12 A, 4P 6 A) · R = reversed coil polarity
Load · Motor	1/6HP, 240VAC
Minimum switching voltage	5V (1mA)
Maximum continuous current	8A
Maximum inrush current	16A
Storage & transport	-55℃~+85℃
Altitude	≤ 2000 m

Specifications

Wiring diagram (bottom view) — 2-, 3- and 4-pole, DC and AC coil versions. For DC types observe coil polarity 13(−)/14(+); the AC coil is non-polarized. The indicator LED shows coil energisation (AC red / DC green), not contact state. Custom wiring on request.

Dimensions

Dimensions (mm) — blade / PCB terminal type, body approx. 13.2 (21 incl. terminals) × 27.7 × 35.5 mm, terminal pitch 4.1 / 6.3 / 6.35 mm. 2-, 3- and 4-pole footprints shown; socket or PCB mount.

ZJ18F-2PB2-pole footprint🔍 Click to enlarge ZJ18F-3PB3-pole footprint🔍 Click to enlarge ZJ18F-4PB4-pole footprint🔍 Click to enlarge

ZJ18F-B Miniature General Purpose Relay

Product Information

Characteristics

Specifications

Dimensions

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