Description
The 1SVR730010R3200 (ABB type designation CR-M230AC2) is an ABB CR-M series miniature pluggable interface relay, designed to provide electrical isolation and signal amplification between low-power control circuits — such as PLC, DCS, or sensor outputs — and higher-power field loads including contactors, solenoid valves, indicator lamps, and audible alarms. It features a 230 V AC coil (50/60 Hz), two changeover contacts (2 C/O, DPDT / 2× SPDT Form C), each rated at 6 A / 250 V AC (resistive), and is intended to be plugged into a standard ABB CR-M series socket (sold separately) for DIN rail mounting. The 1SVR730010R3200 is a passive electromechanical switching element with silver-alloy contacts, mechanical life up to 30 million operations, and 4 kV impulse withstand voltage between coil and contacts — making it a staple MRO item in industrial control panels worldwide.
h2 Application Scenarios
Consider a packaging line where a Siemens / ABB PLC digital output card (0.5 A max) must drive four 24 V DC solenoid valves plus a 230 V AC stack-light beacon. Directly loading the PLC outputs would exceed their rating and expose them to inductive spike risk from the AC lamp circuit. By wiring the PLC output to energize the 230 V AC coil of a 1SVR730010R3200 (fed from a separate 230 V AC control supply), one set of C/O contacts switches the solenoid bank through a fused 24 V DC supply, while the second C/O independently controls the AC beacon — all with 4 kV galvanic isolation protecting the controller. During commissioning, the built-in test button (on socket/relay combos that include it) lets the technician manually actuate the contacts without applying coil voltage, quickly verifying field wiring. When a relay eventually wears out after years of cycling, the plug-in design allows a 30-second swap — no terminal screws disturbed. This illustrates how the 1SVR730010R3200 solves two classic pain points: PLC I/O protection from overload / back-EMF, and rapid replacement that minimizes panel downtime.
h2 Parameter
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1SVR730010R3200 (Type: CR-M230AC2) |
| Manufacturer | ABB (ABB Electrification — Control Products, Interface Relays) |
| Product Category | Miniature Pluggable Interface Relay (Relay Insert Only — Socket Ordered Separately) |
| Coil Voltage (Nominal) | 230 V AC, 50/60 Hz (Standard control voltage for EU/Asia panels) |
| Coil Power Consumption | ≈ 0.8 VA (AC coil) |
| Contact Configuration | 2 C/O (DPDT, 2× Form C — SPDT per pole) (Two independent changeover contacts) |
| Rated Switching Current | 6 A @ 250 V AC (resistive load, AC-12) |
| Max. Switching Voltage | 250 V AC / 220 V DC |
| Contact Material | AgNi (Silver-Nickel alloy) — cadmium-free |
| Mechanical Life | 30,000,000 operations |
| Electrical Life (Rated Load) | 100,000 operations @ 6 A, 250 V AC |
| Impulse Withstand Voltage | 4 kV (1.2/50 µs) coil↔contact (Ensures PLC isolation) |
| Operating Temperature | -40 °C to +70 °C |
| Mounting | Plugs into ABB CR-M socket (CR-M2S, CR-M2SF, CR-M2L etc.) — socket snaps onto 35 mm DIN rail (EN 60715) |
| Certifications | CE, cULus, CSA, GL (Germanischer Lloyd), IEC 61810 / EN 60255 |
h2 Technical Principles and Innovative Values
- Innovation Point 1 — True 4 kV Galvanic Isolation Between Control & Load Circuits: The 1SVR730010R3200 is purpose-built to decouple sensitive electronics (PLC/DCS outputs) from noisy or high-energy field circuits. The 4 kV impulse withstand between coil and contacts exceeds typical panel-transient levels, preventing back-EMF from inductive loads from propagating to and damaging the controller — a critical advantage over direct wiring or solid-state optocouplers in harsh EMC environments.
- Innovation Point 2 — Dual C/O (2× SPDT) in a Single Compact Relay Body Maximizes Wiring Flexibility: Unlike single-pole interface relays, the 1SVR730010R3200 offers two independent changeover contacts in one 21 mm-wide insert. This allows one coil signal to simultaneously switch a NO (normally open) load and an NC (normally closed) alarm/status contact — halving the number of relays required for interlocked or redundant signaling schemes and reducing panel density / wiring labor.
- Innovation Point 3 — Hot-Swappable Plug-In Architecture with Standardized Sockets: The relay insert pulls straight out of its mating CR-M socket (e.g. CR-M2SF with screw terminals or CR-M2SL with spring-cage). All field and supply wires terminate on the socket — never on the relay itself. This means a failed contact can be replaced in seconds without disturbing a single termination, and spare relays can be stocked generically across all CR-M230AC2 applications regardless of socket terminal type.
