Allen-Bradley – 440R-S845AER-NNL MSR57P Speed Monitoring Safety Relay

MPN: 440R-S845AER-NNL · Brand: Rockwell Automation / Allen-Bradley

Price on request

Request a Quote

12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

Ships via

Quick facts

Availability	Confirmed on request
Category	Safety Relays Single-Function
Lifecycle	Active
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

When can 440R-S845AER-NNL be shipped?

440R-S845AER-NNL is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 440R-S845AER-NNL in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 440R-S845AER-NNL and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 440R-S845AER-NNL, subject to availability and destination.

Allen-Bradley 440R-S845AER-NNL — MSR57P Speed Monitoring Safety Relay. PartnerPLC supplies new, surplus and discontinued Allen-Bradley parts — request a quote for price, condition and lead time.

Specifications

Product

Lifecycle	Active
Repair options available	No

Specifications

Output	6 N.O Solid State
Aggregate current of MSR57P, max	10.4 A @ terminal A1 + 13
Case material	Polyamide PA 6.6
Conducted RF immunity	10V RMS @ 150 kHz...80 MHz
Door control outputs 51, 52	Short-circuit protected: 1.5 A, bipolar configuration @ 24V DC
Door control outputs 51, 53	Short-circuit protected: 20 mA, cascading configuration @ 24V DC
EFT/B immunity	Power, DC: ±2 kV, I/O signal lines: ±1kV
Enclosure protection	IP40
ESD immunity	contact discharges: 4 Kv
Evaluation inputs	One- and two-channel
Function rotational speed monitoring	true
Function standstill monitoring	true
Input OFF current, max	2 mA
Input OFF voltage, max	5 V
Input ON voltage, min	11 V
Inputs S34, Y2	11 mA per input, maximum
Input-to-output response time	20 ms
Mounting	DIN rail: 35 mm
MP outputs 14, 24, SLS outputs 68, 78	Short-circuit protected: 2A @ 24V DC
Operating temperature	-5 °C
Operating voltage range	20.4
Opproximate weight	350 g
Output Y1	Short-circuit protected: 20mA @ 24V DC
Overspeed response time	User-configurable
Performance level according to EN ISO 13849-1	Level e
Pollution degree	2
Power consumption	5 W
Power ON delay, max	3 s
Pulse inputs S12, S22, S32, S42, S52, S62, S72, S82, X32, X42	11 mA per input, maximum
Pulse outputs S11, S21	Short-circuit protected: 100mA @ 24V DC
Radiated emissions	Group 1, Class A
Radiated RF immunity	3 V/m @ 1.4...2.0 GHz
Rated control supply voltage Us at DC	24 V
Relative humidity	90%
Shock	Operating: 10 G, 16 ms, 100 shocks
SIL according to IEC 61508	3
SLS_command output Y33	Short-circuit protected: 100mA @ 24V DC
SLS_status output Y35, Fault_status output Y37	Short-circuit protected: 50mA @ 24V DC
SS outputs 34, 44	Short-circuit protected: 100mA @ 24V DC
Stop_command output Y32	Short-circuit protected: 100mA @ 24V DC
Suitable for safety functions	true
Surge transient immunity	Power, DC: ±0.5 kV line-line and ±0.5 kV line-earth, I/O signal lines: ±1 kV line-earth
Terminal protection	IP20
Tightening torque	0.6 nm
Vibration	10...55 Hz, 0.35 mm displacement
Voltage type for actuating	DC
Wire size	0.2 to 2.5 mm²
Wire type	Use copper that will withstand 60/75 °C (140/167 °F)
With feedback circuit	true