STI MiniSafe 4300B-2 Light Curtain Controller Kit | Replacement, Equivalent & Selection Guide
The STI MiniSafe 4300B-2 is a complete safety light curtain controller kit designed for machine guarding applications. This kit includes the controller unit, emitter/receiver bar assemblies, and all necessary cables and mounting hardware. Part numbers covered: MS4328BR, MS4328B2-AC1-00X-00R-U, BA, ASB 2.0, 503-00038, 150-00038-102, 350-00010-001.
At Konmask.com, we specialize in sourcing original, tested, and equivalent replacement components for industrial automation and safety systems.
Technical Specifications
- Manufacturer: STI (Scientific Technologies Inc.)
- Series: MiniSafe 4300
- Model / Kit: 4300B-2
- Controller P/N: MS4328B2-AC1-00X-00R-U
- Emitter/Receiver Bar: MS4328BR
- Cable Assembly: 503-00038
- Mounting Bracket: 150-00038-102
- Accessory / Software: ASB 2.0, 350-00010-001
- Type: Safety Light Curtain Controller (Type 4 / OSHA compliant)
- Protection Height: Refer to MS4328 series datasheet
- Response Time: ≤ 20 ms (typical)
- Safety Category: Category 4, PLe (EN ISO 13849-1)
- Power Supply: AC input (per -AC1 suffix)
- Output: Dual-channel safety relay output (OSSD)
- Weight: Approx. 2.6 kg (complete kit)
- Condition: New / Refurbished / Tested — specify at order
Compatible Replacement & Equivalent Models
If the STI MiniSafe 4300B-2 is discontinued or lead time is long, the following models are functionally equivalent or drop-in replacements:
- STI MiniSafe 4300A-2 — Earlier revision; same mounting footprint, verify firmware compatibility
- STI MiniSafe 4300C-2 — Upgraded revision with enhanced diagnostics
- Omron F3SG-4RA Series — Type 4 light curtain; compatible with similar PLC safety inputs
- Keyence SL-V Series — Slim-profile Type 4 replacement; requires cable adapter
- Sick C4000 Series — High-resolution Type 4 safety light curtain; verify beam pitch
- Banner EZ-SCREEN LS Series — Cost-effective Type 4 equivalent for standard guarding zones
Note: Always verify protection height, beam pitch, and OSSD output compatibility before substituting. Contact [email protected] for a free compatibility check.
Why Choose the Original STI MiniSafe 4300B-2
- ✅ Proven Safety Certification: Type 4 / Category 4 / PLe — meets the most stringent machine guarding standards
- ✅ Complete Kit: Controller + bars + cables + brackets shipped as a tested assembly
- ✅ Direct Replacement: Plug-and-play for existing MiniSafe 4300 series installations
- ✅ Dual-Channel OSSD: Redundant safety outputs for fail-safe operation
- ✅ Compact Design: MiniSafe form factor minimizes installation footprint
- ✅ Wide Industry Adoption: Extensive installed base ensures long-term parts availability
Typical Applications
- Press and stamping machine guarding
- Robotic cell perimeter protection
- Conveyor access point safety
- Packaging and palletizing line guarding
- Injection molding machine operator protection
- Assembly line point-of-operation guarding
System Compatibility
The STI MiniSafe 4300B-2 controller integrates with the following safety PLC and relay platforms:
- Allen-Bradley / Rockwell: GuardLogix, SmartGuard 600
- Siemens: SIMATIC S7-300/400/1500 with F-modules
- Pilz: PNOZ series safety relays
- Omron: G9SA, NE1A Safety Network Controller
- Schmersal: SRB series safety relay modules
- Phoenix Contact: PSR safety relay series
Selection Guide
Use the table below to select the correct MiniSafe 4300 variant for your application:
- 4300B-2 (this kit): Standard protection height, AC power, dual OSSD — general machine guarding
- 4300B-2 DC variant: DC-powered version for 24 VDC control panels
- 4300C-2: Enhanced diagnostics + muting function — conveyor & palletizer applications
- 4300A-2: Legacy revision — use only for direct replacement of existing 4300A installations
Key selection parameters: Protection height (mm) → Beam pitch (mm) → Power supply (AC/DC) → Muting required (Y/N) → Safety category (Cat 2 / Cat 4 / PLd / PLe)
Quality Assurance & Sourcing
- 🔍 100% Tested: All units undergo functional and safety output verification before shipment
- 📦 Original Packaging: Shipped in OEM or equivalent protective packaging
- 🏭 Authorized Sourcing: Procured from verified industrial distributors and OEM channels
- 📋 Traceability: Lot number and serial number documentation available on request
- 🔄 Warranty: 90-day replacement warranty on all units
How to Order
- Confirm your required part number(s): 4300B-2 / MS4328BR / MS4328B2-AC1-00X-00R-U / 503-00038 / 150-00038-102 / 350-00010-001
- Specify quantity and required condition (New / Refurbished / Tested-Used)
- Add to cart and proceed to checkout, or contact us for bulk pricing
- For urgent requirements, email [email protected] or call +0086 19859288691
- Lead time: In-stock orders ship within 1–3 business days; sourced orders 5–15 business days
Replacement & Compatibility FAQ
Q: Can I replace just the controller (MS4328B2-AC1-00X-00R-U) without replacing the bars?
A: Yes, if the existing MS4328BR bars are undamaged and within calibration. Contact us to verify compatibility.
Q: Is the 4300B-2 still in production by STI?
A: STI (now part of Honeywell) has transitioned some MiniSafe lines. We maintain stock of original and tested-refurbished units. Contact us for current availability.
Q: What is the difference between 4300B-2 and 4300C-2?
A: The 4300C-2 adds integrated muting and enhanced status diagnostics. The 4300B-2 is the standard guarding-only version.
Q: Can this unit be used with a Siemens S7-1500F safety PLC?
A: Yes. The dual-channel OSSD outputs are compatible with standard F-DI modules. Verify input voltage and response time requirements in your safety function design.
Q: Do you provide a certificate of conformance (CoC)?
A: Yes, CoC is available upon request for all new and refurbished units.
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