Allen-Bradley 440R-W23221 Guardmaster MSR330P Safety Relay
$123.00
$320.00
Description
Allen-Bradley 440R-W23221 Guardmaster MSR330P Safety Relay
Configured for immediate safety output switching in Guardmaster safety circuits, the Allen-Bradley 440R-W23221 (440R-W23221 Safety Relay Module) operates from 24 VDC control power. The MSR330P relay configuration provides three normally open safety outputs and one normally closed auxiliary output.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 440R-W23221 |
| Brand | Allen-Bradley |
| Product Line | Guardmaster Safety Relays |
| Relay Type | MSR330P Safety Relay |
| Module Type | Modular Monitoring Safety |
| Weight | 0.44 lb |
| Power Consumption | 1.5 W |
| Control Voltage | 24 VDC |
| Output Relays | 3 normally open (NO) |
| Auxiliary Output | 1 normally closed (NC) |
| Response Time | 10 ms typical |
| Operation Mode | Immediate Output |
| Inputs | No inputs |
| Mounting | DIN rail |
| Terminals | Removable |
| Certifications | UL, CE, CSA |
Guardmaster MSR330P Safety Relay Characteristics
The 440R-W23221 uses a 24 VDC control supply with three normally open relay outputs for safety switching. The supplied MSR330P configuration is identified as a modular monitoring safety relay with no inputs. Its typical response time is specified as 10 ms, supporting direct output operation after the associated control condition changes.
The module provides one normally closed auxiliary contact in addition to the three normally open outputs. Removable terminals provide detachable field wiring connections, while DIN rail mounting establishes the mechanical installation method.
Frequently Asked Questions
Q: What control voltage does the 440R-W23221 require?
A: The supplied specification identifies a 24 VDC control voltage and 1.5 W power consumption.
Q: How many relay contacts are provided?
A: The module provides three normally open relay outputs and one normally closed auxiliary output.
Q: Does the supplied data specify operating temperature or dimensions?
A: No. The supplied technical data does not provide dimensional or operating-temperature values.
Field Installation Guidelines
Install the module on a suitable DIN rail with mechanical clearance for removable terminal access. Verify that the 24 VDC supply polarity and voltage correspond with the equipment wiring documentation.
Route safety-related conductors separately from high-voltage power and high-current switching conductors where practical. Avoid parallel routing with variable-frequency drive output cables or other high-noise circuits.
Terminate cable shields according to the system grounding design and applicable installation standards. Do not create unintended shield-current paths through multiple grounding points.
Verify terminal identification before energizing the circuit, particularly when connecting the three normally open outputs and normally closed auxiliary contact. Confirm relay contact states through functional testing before placing the safety circuit into service.
Do not infer missing environmental, dimensional, or electrical limits from the supplied information. Use the applicable manufacturer documentation when defining enclosure spacing, temperature limits, conductor ratings, or installation restrictions.
Features
Minimum Order Quantity (MOQ)
We welcome bulk orders and have a minimum order quantity of just one unit.
Certificates and Documentation
Upon request, we can provide all necessary documentation, including Certificates of Origin/Conformance and other required export documents.
Delivery Time
For items in stock, we aim to deliver within 1-3 days after payment confirmation. Items with specified lead times will be delivered according to the quoted schedule.
Payment Methods
We accept 100% T/T (Telegraphic Transfer) payment before shipping. For items with lead times, a 30% deposit is required upfront, with the remaining 70% due before shipment. For RMB transfers, please contact us if you have an agent in China.
Warranty
We offer a standard one-year warranty on all new and original items. If you require an extended warranty, please contact us for additional cost details.
Refund and Return Policy
Your satisfaction is important to us. If you need to return an item, it must be done within 30 days of the order date. The product must be unused, unopened, and in its original packaging with all accessories included. Refunds are processed within 5-7 business days after we receive the returned item. Please note that shipping and related charges are non-refundable.
Featured
Complementary products
Express Delivery
Fast shipping for your urgent needs.
Large Inventory
Extensive stock ensures quick availability.
Premium Quality
Genuine, high-grade PLC & DCS components.
24/7 Customer Support
Reliable service for clients worldwide.