Octal plug-in relay switch: 8-pin and 11-pin round-base relays with their DIN-rail sockets
Round-base plug-in relays · 8-pin and 11-pin octal relays, their DIN-rail sockets, test buttons, coil modules and DC breaking limits
A relay switch of this kind is the round-base, clear-cover control relay that plugs into a socket on a DIN rail or panel: an 8-pin base for two changeover (DPDT) contacts or an 11-pin base for three (3PDT). The relay and its socket are bought as a pair, and the socket carries the terminals, the retaining clip and, where fitted, the coil indication or suppression module. Selection turns on the contact rating at the actual load (DC breaking capacity falls steeply with voltage), the coil voltage and its operating range, the socket's own rating and wire size, and whether a lockable test button or mechanical indicator is needed for commissioning.
Plug-in electromechanical relays with 8-pin or 11-pin round (octal-type) bases, 2 or 3 changeover contacts around 6 to 10 A, and the DIN-rail or panel sockets, retaining clips and coil modules used with them. The Power relay page covers electromechanical power relays across PCB, socket and panel formats; the Electromagnetic relay page covers miniature square-pin 14-pin plug-in relays; Relay coil assembly covers the coil itself; Interface module for PLC and DCS I/O covers slim relay interface modules. Solid-state, safety and time relays are outside this page.
CNFX editorial research · Sources checked October 17, 2026 · 4 sources
Ten amps at 250 V AC, but well under one amp of DC above 100 V
Finder's 60 series (types 60.12 with an 8-pin base and 60.13 with an 11-pin base) lists 2 CO or 3 CO contacts rated 10 A with 20 A maximum peak current, 250 V AC rated and 400 V AC maximum switching voltage, 2,500 VA AC1 and 500 VA AC15 at 230 V AC, and a 0.37 kW single-phase motor rating at 230 V AC. Its DC1 breaking capacity is 10 A at 24 V, 0.4 A at 110 V and 0.15 A at 220 V. [1]
CHINT's JQX-10F catalogue page lists the same class of relay in 2C and 3C versions: silver alloy contacts, 10 A/250 V AC and 10 A/30 V DC rated resistive load, 250 V AC and 125 V DC maximum switching voltage, and maximum switching power of 2,500 VA and 300 W. It gives electrical endurance of 100 × 10³ cycles and mechanical endurance of 10 × 10⁶ cycles, against Finder's 200 × 10³ electrical cycles at rated AC1 load and 20 × 10⁶ (AC coil) or 50 × 10⁶ (DC coil) mechanical cycles. [2][1]
Editorial calculation: from Finder's DC1 figures, the breakable DC power is 24 V × 10 A = 240 W at 24 V but 110 V × 0.4 A = 44 W at 110 V and 220 V × 0.15 A = 33 W at 220 V. CHINT states a single 300 W DC limit. A 110 V DC solenoid drawing 1 A is therefore outside Finder's DC1 resistive figure even though the relay is sold as 10 A, and inductive DC loads need the maker's DC13 data or a contactor. [1][2]
Small signals are the other end. Finder lists a 500 mW (10 V/5 mA) minimum switching load for the standard AgNi contacts and offers a 6 A version (60.12-52xx, 60.13-52xx) with bifurcated gold-plated AgNi contacts for low-level switching. [1]
State each load as voltage, current and type (resistive AC1, inductive AC15, DC resistive or DC inductive), and the smallest signal a contact must carry.
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Socket rating, wire size and the modules that clip into the base
Finder's 90.02 (8-pin) and 90.03 (11-pin) box-clamp sockets for the 60 series are rated 10 A–250 V with 2 kV AC dielectric strength, IP 20, an ambient range of −40 to +70 °C, 0.6 Nm screw torque and 10 mm wire strip length; they take 1 × 6 / 2 × 2.5 mm² solid or 1 × 4 / 2 × 2.5 mm² stranded wire. The sockets mount on a panel or a 35 mm rail to EN 60715 and use a metal retaining clip. [1]
The 99.02 modules that plug into those sockets include a diode for 6–220 V DC, LEDs for 6–24, 28–60 and 110–240 V AC/DC, LED plus diode and LED plus varistor versions; DC modules have standard +A1 polarity, with +A2 on request. [1] Finder groups these under coil EMC suppression, and because the DC modules are polarity-specific, the coil supply polarity has to be on the drawing. [1]
Sockets for this format are also sold separately. CDGKZ lists 10 A 300 V 8-pin sockets such as 10F-2Z-C1 and 10F-2Z-C2, and 11-pin sockets such as 13F-3Z-C3. [3] Its socket guide states that pin count alone does not identify a socket: terminal numbering, mounting-hole pattern and the relay family the socket was designed for must also match, and it advises asking for a top-view or bottom-view pinout before approving a replacement. [4]
Lockable test button and mechanical flag for commissioning
Finder's ordering code lets the 60 series be built with a mechanical indicator, an AC LED, a lockable test button with mechanical indicator, or combinations with an LED and, for DC coils, an LED plus diode with positive polarity to pin 2; it notes that these LED options are not available for 220 V DC and 400 V AC versions, and that only combinations in the same row of its option table are possible. [1]
Finder describes its test button as dual-purpose. With the plastic pip above it intact, pushing the button operates the contacts and releasing it returns them. With the pip cut off, pushing and rotating the button latches the contacts in the operating state until it is rotated back; Finder asks for swift and decisive actuation in both cases. [1] Because a latched button holds the contacts operated, the commissioning checklist should include confirming that every test button is returned before handover.
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Order the relay and socket as one line item
Paste it into your enquiry below or into an email to a maker, then replace every bracket.
Relay: [8-pin 2 CO or 11-pin 3 CO; contact material]
Loads: [voltage; current; AC1/AC15/DC1/DC inductive; minimum signal]
Coil: [AC or DC; nominal voltage; polarity]
Options: [test button; mechanical flag; LED]
Socket: [DIN rail or panel; screw or box clamp; wire size; retaining clip]
Modules: [LED; diode; varistor; timer]
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Compiled and source-reviewed by the CNFX editorial team.
Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review
· Page last updated 17 October 2026
Buyer questions
What is the difference between an 8-pin and an 11-pin octal relay?
In Finder's 60 series the 8-pin type 60.12 has two changeover contacts and the 11-pin type 60.13 has three. [1]
Can a 10 A octal relay switch 10 A DC?
Finder lists 10 A DC1 at 24 V but only 0.4 A at 110 V and 0.15 A at 220 V; CHINT lists 10 A at 30 V DC and 300 W maximum DC switching power. [1][2]
What is the socket rated for?
Finder's 90.02 and 90.03 sockets are rated 10 A–250 V with 2 kV AC dielectric strength; CDGKZ lists 10 A 300 V 8-pin and 11-pin sockets. [1][3]
Sources and what still needs a direct check
Sources checked 2026-10-17. Relay and socket data for the 60 series are Finder's (catalogue edition IX-2026). The JQX-10F figures are CHINT's, from catalogue pages hosted by the Vietnamese distributor NPower. CDGKZ, a socket maker in Yueqing, supplies the socket listing and the pinout advice.
