ABB 23BA20 GSNE000700R2302

1. Product Overview

The ABB 23BA20 GSNE000700R2302 is a compact, high-performance contactor relay from ABB’s legacy and widely deployed 23BA series. Designed for auxiliary switching and control circuit applications, this relay provides reliable electrical isolation between low-power control signals (e.g., PLC outputs, pushbuttons, thermostats) and higher-power motor starters, solenoid valves, and indicator circuits. With its bifurcated silver-nickel contacts and AC/DC compatible coil, the 23BA20 offers exceptional longevity in high-cycling environments. This specific configuration (GSNE000700R2302) denotes a factory-assembled variant with pre-wired auxiliary contacts and standardized coil voltage.

2. Key Applications 

• Motor starter interlocking (forward/reverse circuits)
• HVAC compressor contactor pilot control
• Lighting contactor banks in industrial warehouses
• Elevator control panel signal routing
• Conveyor system safety chain relays
• Generator automatic transfer switch logic

3. Technical Parameters

The ABB 23BA20 GSNE000700R2302 is built around an economical yet robust electromagnetic system. The coil is rated for 230V AC 50/60Hz (standard version; check part number suffix for other voltages). Coil inrush power consumption is approximately 70 VA, while sealed (holding) power drops to just 9 VA, minimizing heat generation in densely packed panels. The contact configuration is 2 normally open (NO) + 2 normally closed (NC), with all contacts bifurcated (split) to ensure reliable switching even under low-level signal conditions (e.g., 5V DC, 10mA). Maximum thermal current (Ith) is 10A per contact, with a rated insulation voltage (Ui) of 690V and impulse withstand voltage (Uimp) of 6kV. Mechanical life exceeds 10 million operations, while electrical life at rated load is 1 million operations. Operating ambient temperature ranges from –25°C to +60°C without derating. Dimensions are 45mm wide, 58mm high, and 72mm deep (with screw terminals), weighing approximately 0.22 kg.

4. Key Features

• AC/DC silent operation – no hum or chatter even on DC control circuits
• Bifurcated contacts – two parallel contact blades per pole for redundancy and self-cleaning action
• Captive combination screw terminals – accept both ring lugs and bare wires (up to 2.5 mm² / 14 AWG)
• Built-in transient suppression – RC snubber across coil (AC versions) to reduce EMI
• Mechanical indicator window – shows red/green status of main contact position
• Snap-on auxiliary block capability – side-mounting expansion allows up to 4 additional contacts
• Touch-safe IP20 finger protection (IEC 60529)

5. Installation & Maintenance

Installation:

• Mount the 23BA20 onto a standard 35mm DIN rail (EN 60715) using the snap-on clip, or secure with two M4 screws (screw mounting kit optional).
• For screw mounting: use 60mm center-to-center spacing. Torque terminal screws to 1.2 Nm (10.6 lb-in).
• Connect coil terminals (A1 and A2) to the 230V AC control source. Polarity is irrelevant for AC coils.
• Wire load circuits: common (C) to NO/NC as required. Use copper conductors only (75°C rating minimum).
• Leave at least 10mm clearance above and below for heat dissipation.

Maintenance:

• Inspect contact tips every 100,000 operations in dusty environments. Darkening or slight pitting is normal.
• If a contact welds or fails to open, replace the entire contactor relay (contacts are not field-replaceable).
• Periodically verify the mechanical indicator matches the commanded state.
• Clean dust from the moving armature slot using a non-conductive brush; do not use oil or grease.

6. Structure & Composition 

Unlike modular I/O cards, the 23BA20 is a unitary electromechanical device. Its main components include:

• Magnetic circuit: E-shaped laminated silicon steel core with a shaded copper ring (for AC noise reduction).
• Moving armature: Spring-return mechanism with a molded thermoplastic carrier.
• Contact block: Twin-break, bifurcated silver-nickel contacts (90% Ag, 10% Ni) for arc resistance.
• Arc chutes: Small magnetic blowout features to extinguish arcs faster.
• Housing: Glass-reinforced polyamide (PA66) V-0 rated, translucent cover over the contact area.
• Terminals: M3.5 combination head (slotted/Phillips) with wire protectors.

The GSNE000700R2302 suffix indicates a specific factory configuration: pre-installed auxiliary contact block (1NO+1NC) on the right side, plus a 230V AC coil with surge suppressor.

7. Additional Information

• Certifications: CE, CCC, UL Listed (File E312457), CSA, EAC
• Pollution degree: 3 (industrial environment)
• Rated operational current (Ie): 10A AC-15 (inductive) @ 230V AC; 6A AC-15 @ 400V AC; 0.5A DC-13 @ 125V DC
• Short-circuit protection: Max fuse 10A gG (glow wire) or C-10A circuit breaker
• Coil operating limits: Dropout > 20% of rated, pickup < 85% of rated
• Storage temperature: –40°C to +80°C
• Warranty: 12 months (electromechanical wear excluded)

The ABB 23BA20 GSNE000700R2302 is a workhorse control relay that combines decades-proven reliability with modern safety features. Its bifurcated contacts and wide voltage tolerance make it especially suitable for PLC-driven panels where dry switching (low voltage/current) is required.