Mechanical Relay with Socket (16A 250V AC / 12V DC coil)
User Manual

Mechanical Relay with Socket (16A 250V AC / 12V DC coil)

SKU: PP-R1-M

Table of Contents

1. Product Description

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DIN-rail relay module that lets a PIERRE controller switch mains or high-current loads. The coil is driven from a 12 V DC signal output pin on the controller, with a second wire back to the controller's GND to close the circuit. Coil polarity is not critical — A1 and A2 can be interchanged.

The contact side is a potential-free changeover, fully isolated from the 12 V control side:

  • 11 — COM, the common pole; the switched line feeds in here
  • 12 — NC, connected to 11 when the coil is off
  • 14 — NO, connected to 11 when the coil is on

2. Product Specifications

Technical Specifications

Electrical

Coil Voltage 12 V DC
Contact Rating 16 A @ 250 V AC (resistive)
Contact Material Silver alloy (Ag alloy)
Contact Resistance ≤100 mΩ
Max Switching Power 4000 VA
Max Switching Voltage 440 V
Max Switching Current 16 A
Dielectric Strength 5000 V AC coil–contact · 1000 V AC contact–contact · 2500 V AC between contact groups · 2000 V AC between adjacent socket terminals (1 min)
Surge Voltage 10 kV (1.2/50 µs), coil to contact
Operate Time ≤15 ms
Release Time ≤8 ms
Insulation Resistance (500 V DC) ≥1000 MΩ
Terminal Wire Size 0.5 – 1 mm²
Terminal Screw Torque 0.8 N·m
Relay 1 changeover contact (SPDT)

Environmental

Operating Temperature -40 °C to +70 °C
Operating Humidity 35 – 85 % RH
Storage Temperature -40 °C to +55 °C
Vibration Resistance 10–150 Hz, 10 g / 5 g
Shock Resistance Impact 98 m/s², stability 980 m/s²

Physical

Material Socket PA6 + GF20 % (RoHS), UL94 V-0; brass terminals, tin-plated
Mounting Type DIN Rail

3. Connections Diagram

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Wire the relay as follows:

  • A1 / A2 – connect the relay coil supply here. Apply the rated coil voltage across A1 and A2 to activate the relay, these are the connections from PIERRE controllers output pin and GND.
  • 11 – COM – common contact.
  • 12 – NC – normally closed contact. 11 and 12 are connected when the relay coil is OFF.
  • 14 – NO – normally open contact. 11 and 14 are connected when the relay coil is ON.


4. Relay Dimensions

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Slim plug-in relay: 29 × 12.7 × 15.7 mm body (3.3 mm pin length below the base).

Five terminals: 2 coil pins 0.5 × 0.5 mm and 3 contact pins 0.5 × 0.8 mm.

PCB footprint: 5 × Ø1.3 mm holes on a 20.16 × 7.56 mm pattern, with 2.3 mm and 2 × 3.5 mm pin spacing along the length.

5. Socket Dimensions

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Dimensions: 75.5 × 15.6 × 42.6 mm max, 37.85 mm DIN-rail base width.

Screws: Five M3 × 8 screw terminals; 40 mm terminal span with 2 × 3.5 mm pin spacing.

6. Relay Characteristics

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Maximum switching power

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Coil operating temperature curve (AC)

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Electrical durability curve

© 2024 Pierre. All rights reserved.

Last updated: October 06, 2026